57057949431 has 24 divisors (see below), whose sum is σ = 94270778784. Its totient is φ = 32576892480.

The previous prime is 57057949409. The next prime is 57057949441. The reversal of 57057949431 is 13494975075.

57057949431 is a `hidden beast` number, since 5 + 70 + 57 + 9 + 494 + 31 = 666.

It is not a de Polignac number, because 57057949431 - 2⁶ = 57057949367 is a prime.

It is a super-2 number, since 2×57057949431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57057949441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 309036 + ... + 457841.

It is an arithmetic number, because the mean of its divisors is an integer number (3927949116).

Almost surely, 2^57057949431 is an apocalyptic number.

57057949431 is a deficient number, since it is larger than the sum of its proper divisors (37212829353).

57057949431 is a wasteful number, since it uses less digits than its factorization.

57057949431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768071 (or 768068 counting only the distinct ones).

The product of its (nonzero) digits is 4762800, while the sum is 54.

The spelling of 57057949431 in words is "fifty-seven billion, fifty-seven million, nine hundred forty-nine thousand, four hundred thirty-one".