56716231 has 12 divisors (see below), whose sum is σ = 66999960. Its totient is φ = 47592480.

The previous prime is 56716223. The next prime is 56716249. The reversal of 56716231 is 13261765.

It is not a de Polignac number, because 56716231 - 2³ = 56716223 is a prime.

It is a super-2 number, since 2×56716231² = 6433461717690722, 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 = 56716193 and 56716202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56716931) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13396 + ... + 17113.

It is an arithmetic number, because the mean of its divisors is an integer number (5583330).

Almost surely, 2^56716231 is an apocalyptic number.

56716231 is a deficient number, since it is larger than the sum of its proper divisors (10283729).

56716231 is a wasteful number, since it uses less digits than its factorization.

56716231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30546 (or 30533 counting only the distinct ones).

The product of its digits is 7560, while the sum is 31.

The square root of 56716231 is about 7531.0179258849. The cubic root of 56716231 is about 384.2104039891.

Adding to 56716231 its reverse (13261765), we get a palindrome (69977996).

The spelling of 56716231 in words is "fifty-six million, seven hundred sixteen thousand, two hundred thirty-one".