56311013 has 8 divisors (see below), whose sum is σ = 61672320. Its totient is φ = 50990080.

The previous prime is 56311007. The next prime is 56311019. The reversal of 56311013 is 31011365.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (56311007) and next prime (56311019).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56311013 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 (56311019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7133 + ... + 12786.

It is an arithmetic number, because the mean of its divisors is an integer number (7709040).

Almost surely, 2^56311013 is an apocalyptic number.

It is an amenable number.

56311013 is a deficient number, since it is larger than the sum of its proper divisors (5361307).

56311013 is a wasteful number, since it uses less digits than its factorization.

56311013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20187.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 56311013 is about 7504.0664309426. The cubic root of 56311013 is about 383.2931989908.

Adding to 56311013 its reverse (31011365), we get a palindrome (87322378).

The spelling of 56311013 in words is "fifty-six million, three hundred eleven thousand, thirteen".