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53111010312 = 2333475231581
BaseRepresentation
bin110001011101101010…
…011011010000001000
312002002101201212111000
4301131222123100020
51332232404312222
640222053135000
73560066065443
oct613552332010
9162071655430
1053111010312
1120584865158
12a36292a460
135015451429
1427db99265a
1515aca659ac
hexc5da9b408

53111010312 has 64 divisors (see below), whose sum is σ = 150669561600. Its totient is φ = 17326992960.

The previous prime is 53111010283. The next prime is 53111010313. The reversal of 53111010312 is 21301011135.

53111010312 is a `hidden beast` number, since 531 + 1 + 101 + 0 + 31 + 2 = 666.

It is a super-3 number, since 3×531110103123 (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (53111010313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2605639 + ... + 2625942.

It is an arithmetic number, because the mean of its divisors is an integer number (2354211900).

Almost surely, 253111010312 is an apocalyptic number.

It is an amenable number.

53111010312 is an abundant number, since it is smaller than the sum of its proper divisors (97558551288).

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

53111010312 is a wasteful number, since it uses less digits than its factorization.

53111010312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5231643 (or 5231633 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

Adding to 53111010312 its reverse (21301011135), we get a palindrome (74412021447).

The spelling of 53111010312 in words is "fifty-three billion, one hundred eleven million, ten thousand, three hundred twelve".

Divisors: 1 2 3 4 6 8 9 12 18 24 27 36 47 54 72 94 108 141 188 216 282 376 423 564 846 1128 1269 1692 2538 3384 5076 10152 5231581 10463162 15694743 20926324 31389486 41852648 47084229 62778972 94168458 125557944 141252687 188336916 245884307 282505374 376673832 491768614 565010748 737652921 983537228 1130021496 1475305842 1967074456 2212958763 2950611684 4425917526 5901223368 6638876289 8851835052 13277752578 17703670104 26555505156 53111010312