57120331 has 2 divisors, whose sum is σ = 57120332. Its totient is φ = 57120330.

The previous prime is 57120313. The next prime is 57120337. The reversal of 57120331 is 13302175.

Together with previous prime (57120313) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57120331 - 2⁵ = 57120299 is a prime.

It is a super-2 number, since 2×57120331² = 6525464427099122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57120337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28560165 + 28560166.

It is an arithmetic number, because the mean of its divisors is an integer number (28560166).

Almost surely, 2^57120331 is an apocalyptic number.

57120331 is a deficient number, since it is larger than the sum of its proper divisors (1).

57120331 is an equidigital number, since it uses as much as digits as its factorization.

57120331 is an odious number, because the sum of its binary digits is odd.

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

The square root of 57120331 is about 7557.7993490169. The cubic root of 57120331 is about 385.1207379795.

It can be divided in two parts, 571 and 20331, that added together give a palindrome (20902).

The spelling of 57120331 in words is "fifty-seven million, one hundred twenty thousand, three hundred thirty-one".