57118031 has 2 divisors, whose sum is σ = 57118032. Its totient is φ = 57118030.

The previous prime is 57118003. The next prime is 57118051. The reversal of 57118031 is 13081175.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57118031 - 2¹⁰ = 57117007 is a prime.

It is a super-2 number, since 2×57118031² = 6524938930633922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57118001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28559015 + 28559016.

It is an arithmetic number, because the mean of its divisors is an integer number (28559016).

Almost surely, 2^57118031 is an apocalyptic number.

57118031 is a deficient number, since it is larger than the sum of its proper divisors (1).

57118031 is an equidigital number, since it uses as much as digits as its factorization.

57118031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 26.

The square root of 57118031 is about 7557.6471867903. The cubic root of 57118031 is about 385.1155688359.

The spelling of 57118031 in words is "fifty-seven million, one hundred eighteen thousand, thirty-one".