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57317374731 = 3791295318671
BaseRepresentation
bin110101011000011000…
…011011101100001011
312110221112202022200210
4311120120123230023
51414341221442411
642155314132203
74066243434531
oct653030335413
9173845668623
1057317374731
1122343188a91
12b137581063
135535a47c66
142aba4a4151
151756ea0ca6
hexd5861bb0b

57317374731 has 16 divisors (see below), whose sum is σ = 77400668160. Its totient is φ = 37722959040.

The previous prime is 57317374711. The next prime is 57317374757. The reversal of 57317374731 is 13747371375.

57317374731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 57317374731 - 219 = 57316850443 is a prime.

It is a super-2 number, since 2×573173747312 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57317374711) 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, 3060526 + ... + 3079196.

It is an arithmetic number, because the mean of its divisors is an integer number (4837541760).

Almost surely, 257317374731 is an apocalyptic number.

57317374731 is a deficient number, since it is larger than the sum of its proper divisors (20083293429).

57317374731 is a wasteful number, since it uses less digits than its factorization.

57317374731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31706.

The product of its digits is 1296540, while the sum is 48.

The spelling of 57317374731 in words is "fifty-seven billion, three hundred seventeen million, three hundred seventy-four thousand, seven hundred thirty-one".

Divisors: 1 3 79 237 12953 18671 38859 56013 1023287 1475009 3069861 4425027 241845463 725536389 19105791577 57317374731