56931319 has 2 divisors, whose sum is σ = 56931320. Its totient is φ = 56931318.

The previous prime is 56931311. The next prime is 56931341. The reversal of 56931319 is 91313965.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56931319 - 2³ = 56931311 is a prime.

It is a super-2 number, since 2×56931319² = 6482350166159522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56931311) 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 as a sum of consecutive naturals, namely, 28465659 + 28465660.

It is an arithmetic number, because the mean of its divisors is an integer number (28465660).

Almost surely, 2^56931319 is an apocalyptic number.

56931319 is a deficient number, since it is larger than the sum of its proper divisors (1).

56931319 is an equidigital number, since it uses as much as digits as its factorization.

56931319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21870, while the sum is 37.

The square root of 56931319 is about 7545.2845539449. The cubic root of 56931319 is about 384.6954785433.

The spelling of 56931319 in words is "fifty-six million, nine hundred thirty-one thousand, three hundred nineteen".