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30231404412 = 223111915776777
BaseRepresentation
bin11100001001111011…
…101001111101111100
32220000212201110112220
4130021323221331330
5443403214420122
621515455525340
72120106461166
oct341173517574
986025643486
1030231404412
1111903926650
125a38529850
132b0a2c66a1
14166b083936
15bbe0d825c
hex709ee9f7c

30231404412 has 96 divisors (see below), whose sum is σ = 81519809280. Its totient is φ = 8623480320.

The previous prime is 30231404381. The next prime is 30231404417. The reversal of 30231404412 is 21440413203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30231404417) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 355368 + ... + 432144.

It is an arithmetic number, because the mean of its divisors is an integer number (849164680).

Almost surely, 230231404412 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 30231404412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40759904640).

30231404412 is an abundant number, since it is smaller than the sum of its proper divisors (51288404868).

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

30231404412 is a wasteful number, since it uses less digits than its factorization.

30231404412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76971 (or 76969 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 30231404412 its reverse (21440413203), we get a palindrome (51671817615).

The spelling of 30231404412 in words is "thirty billion, two hundred thirty-one million, four hundred four thousand, four hundred twelve".

Divisors: 1 2 3 4 6 11 12 19 22 33 38 44 57 66 76 114 132 157 209 228 314 418 471 627 628 836 942 1254 1727 1884 2508 2983 3454 5181 5966 6908 8949 10362 11932 17898 20724 32813 35796 65626 76777 98439 131252 153554 196878 230331 307108 393756 460662 844547 921324 1458763 1689094 2533641 2917526 3378188 4376289 5067282 5835052 8752578 10134564 12053989 16046393 17505156 24107978 32092786 36161967 48139179 48215956 64185572 72323934 96278358 132593879 144647868 192556716 229025791 265187758 397781637 458051582 530375516 687077373 795563274 916103164 1374154746 1591126548 2519283701 2748309492 5038567402 7557851103 10077134804 15115702206 30231404412