56313309 has 16 divisors (see below), whose sum is σ = 82189184. Its totient is φ = 34084800.

The previous prime is 56313289. The next prime is 56313311. The reversal of 56313309 is 90331365.

It is not a de Polignac number, because 56313309 - 2⁵ = 56313277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56313319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9457 + ... + 14214.

It is an arithmetic number, because the mean of its divisors is an integer number (5136824).

Almost surely, 2^56313309 is an apocalyptic number.

It is an amenable number.

56313309 is a deficient number, since it is larger than the sum of its proper divisors (25875875).

56313309 is a wasteful number, since it uses less digits than its factorization.

56313309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23748.

The product of its (nonzero) digits is 7290, while the sum is 30.

The square root of 56313309 is about 7504.2194131035. The cubic root of 56313309 is about 383.2984083283.

The spelling of 56313309 in words is "fifty-six million, three hundred thirteen thousand, three hundred nine".