57123031 has 4 divisors (see below), whose sum is σ = 65283472. Its totient is φ = 48962592.

The previous prime is 57123019. The next prime is 57123041. The reversal of 57123031 is 13032175.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 57123031 - 2⁷ = 57122903 is a prime.

It is a super-2 number, since 2×57123031² = 6526081341253922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57122993 and 57123011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57123041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4080210 + ... + 4080223.

It is an arithmetic number, because the mean of its divisors is an integer number (16320868).

Almost surely, 2^57123031 is an apocalyptic number.

57123031 is a deficient number, since it is larger than the sum of its proper divisors (8160441).

57123031 is an equidigital number, since it uses as much as digits as its factorization.

57123031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8160440.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 57123031 is about 7557.9779703304. The cubic root of 57123031 is about 385.1268059276.

The spelling of 57123031 in words is "fifty-seven million, one hundred twenty-three thousand, thirty-one".