56389131 has 12 divisors (see below), whose sum is σ = 85738120. Its totient is φ = 35614080.

The previous prime is 56389129. The next prime is 56389139. The reversal of 56389131 is 13198365.

It is a happy number.

56389131 is a `hidden beast` number, since 5 + 638 + 9 + 13 + 1 = 666.

It is not a de Polignac number, because 56389131 - 2¹ = 56389129 is a prime.

It is a super-2 number, since 2×56389131² = 6359468189870322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56389139) 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, 164710 + ... + 165051.

Almost surely, 2^56389131 is an apocalyptic number.

56389131 is a deficient number, since it is larger than the sum of its proper divisors (29348989).

56389131 is a wasteful number, since it uses less digits than its factorization.

56389131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329786 (or 329783 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 56389131 is about 7509.2696715460. The cubic root of 56389131 is about 383.4703594985.

The spelling of 56389131 in words is "fifty-six million, three hundred eighty-nine thousand, one hundred thirty-one".