56311623 has 12 divisors (see below), whose sum is σ = 81630120. Its totient is φ = 37406736.

The previous prime is 56311609. The next prime is 56311631. The reversal of 56311623 is 32611365.

56311623 is a `hidden beast` number, since 5 + 6 + 31 + 1 + 623 = 666.

It is not a de Polignac number, because 56311623 - 2²² = 52117319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56311603) 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 in 11 ways as a sum of consecutive naturals, for example, 8508 + ... + 13601.

It is an arithmetic number, because the mean of its divisors is an integer number (6802510).

Almost surely, 2^56311623 is an apocalyptic number.

56311623 is a deficient number, since it is larger than the sum of its proper divisors (25318497).

56311623 is a wasteful number, since it uses less digits than its factorization.

56311623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22398 (or 22395 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 56311623 is about 7504.1070754621. The cubic root of 56311623 is about 383.2945830185.

Adding to 56311623 its reverse (32611365), we get a palindrome (88922988).

The spelling of 56311623 in words is "fifty-six million, three hundred eleven thousand, six hundred twenty-three".