313613291393 has 4 divisors (see below), whose sum is σ = 316718373588. Its totient is φ = 310508209200.

The previous prime is 313613291353. The next prime is 313613291399. The reversal of 313613291393 is 393192316313.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 154502452624 + 159110838769 = 393068^2 + 398887^2 .

It is a cyclic number.

It is not a de Polignac number, because 313613291393 - 2³² = 309318324097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313613291399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1552540946 + ... + 1552541147.

It is an arithmetic number, because the mean of its divisors is an integer number (79179593397).

Almost surely, 2^313613291393 is an apocalyptic number.

It is an amenable number.

313613291393 is a deficient number, since it is larger than the sum of its proper divisors (3105082195).

313613291393 is a wasteful number, since it uses less digits than its factorization.

313613291393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3105082194.

The product of its digits is 236196, while the sum is 44.

The spelling of 313613291393 in words is "three hundred thirteen billion, six hundred thirteen million, two hundred ninety-one thousand, three hundred ninety-three".