57431031 has 16 divisors (see below), whose sum is σ = 87704064. Its totient is φ = 32746464.

The previous prime is 57431029. The next prime is 57431093. The reversal of 57431031 is 13013475.

It is not a de Polignac number, because 57431031 - 2¹ = 57431029 is a prime.

It is a super-2 number, since 2×57431031² = 6596646643445922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 57430992 and 57431010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57421031) by changing a digit.

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, 7845 + ... + 13281.

It is an arithmetic number, because the mean of its divisors is an integer number (5481504).

Almost surely, 2^57431031 is an apocalyptic number.

57431031 is a deficient number, since it is larger than the sum of its proper divisors (30273033).

57431031 is a wasteful number, since it uses less digits than its factorization.

57431031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5950.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 57431031 is about 7578.3263983547. The cubic root of 57431031 is about 385.8177502374.

The spelling of 57431031 in words is "fifty-seven million, four hundred thirty-one thousand, thirty-one".