56310031 has 2 divisors, whose sum is σ = 56310032. Its totient is φ = 56310030.

The previous prime is 56310019. The next prime is 56310061. The reversal of 56310031 is 13001365.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56310031 is a prime.

It is a super-2 number, since 2×56310031² = 6341639182441922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56309990 and 56310008.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56310061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28155015 + 28155016.

It is an arithmetic number, because the mean of its divisors is an integer number (28155016).

Almost surely, 2^56310031 is an apocalyptic number.

56310031 is a deficient number, since it is larger than the sum of its proper divisors (1).

56310031 is an equidigital number, since it uses as much as digits as its factorization.

56310031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 56310031 is about 7504.0009994669. Note that the first 3 decimals coincide. The cubic root of 56310031 is about 383.2909709120.

Adding to 56310031 its reverse (13001365), we get a palindrome (69311396).

The spelling of 56310031 in words is "fifty-six million, three hundred ten thousand, thirty-one".