56707031 has 2 divisors, whose sum is σ = 56707032. Its totient is φ = 56707030.

The previous prime is 56707009. The next prime is 56707033. The reversal of 56707031 is 13070765.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56707031 is a prime.

It is a super-2 number, since 2×56707031² = 6431374729669922, which contains 22 as substring.

Together with 56707033, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 56706985 and 56707003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56707033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28353515 + 28353516.

It is an arithmetic number, because the mean of its divisors is an integer number (28353516).

Almost surely, 2^56707031 is an apocalyptic number.

56707031 is a deficient number, since it is larger than the sum of its proper divisors (1).

56707031 is an equidigital number, since it uses as much as digits as its factorization.

56707031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4410, while the sum is 29.

The square root of 56707031 is about 7530.4070939093. The cubic root of 56707031 is about 384.1896284733.

Adding to 56707031 its reverse (13070765), we get a palindrome (69777796).

The spelling of 56707031 in words is "fifty-six million, seven hundred seven thousand, thirty-one".