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102431430144 = 293349115091
BaseRepresentation
bin101111101100101100…
…0111001011000000000
3100210101121210210101000
41133121120321120000
53134234421231034
6115020101012000
710254226535061
oct1373130713000
9323347723330
10102431430144
113a4939655aa
1217a280b4000
1398754812c4
144d59d42568
1529e791d599
hex17d9639600

102431430144 has 160 divisors (see below), whose sum is σ = 303841802880. Its totient is φ = 34072012800.

The previous prime is 102431430139. The next prime is 102431430151. The reversal of 102431430144 is 441034134201.

102431430144 is a `hidden beast` number, since 1 + 0 + 2 + 4 + 314 + 301 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6780039 + ... + 6795129.

It is an arithmetic number, because the mean of its divisors is an integer number (1899011268).

Almost surely, 2102431430144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102431430144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151920901440).

102431430144 is an abundant number, since it is smaller than the sum of its proper divisors (201410372736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102431430144 is an equidigital number, since it uses as much as digits as its factorization.

102431430144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15609 (or 15587 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 102431430144 its reverse (441034134201), we get a palindrome (543465564345).

The spelling of 102431430144 in words is "one hundred two billion, four hundred thirty-one million, four hundred thirty thousand, one hundred forty-four".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 27 32 36 48 54 64 72 96 108 128 144 192 216 256 288 384 432 491 512 576 768 864 982 1152 1473 1536 1728 1964 2304 2946 3456 3928 4419 4608 5892 6912 7856 8838 11784 13257 13824 15091 15712 17676 23568 26514 30182 31424 35352 45273 47136 53028 60364 62848 70704 90546 94272 106056 120728 125696 135819 141408 181092 188544 212112 241456 251392 271638 282816 362184 377088 407457 424224 482912 543276 565632 724368 754176 814914 848448 965824 1086552 1131264 1448736 1629828 1696896 1931648 2173104 2262528 2897472 3259656 3393792 3863296 4346208 5794944 6519312 6787584 7409681 7726592 8692416 11589888 13038624 14819362 17384832 22229043 23179776 26077248 29638724 34769664 44458086 52154496 59277448 66687129 69539328 88916172 104308992 118554896 133374258 177832344 200061387 208617984 237109792 266748516 355664688 400122774 474219584 533497032 711329376 800245548 948439168 1066994064 1422658752 1600491096 1896878336 2133988128 2845317504 3200982192 3793756672 4267976256 5690635008 6401964384 8535952512 11381270016 12803928768 17071905024 25607857536 34143810048 51215715072 102431430144