313231330321 has 24 divisors (see below), whose sum is σ = 394998483264. Its totient is φ = 246190039200.

The previous prime is 313231330277. The next prime is 313231330397. The reversal of 313231330321 is 123033132313.

It is not a de Polignac number, because 313231330321 - 2⁷ = 313231330193 is a prime.

It is a super-2 number, since 2×313231330321² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (313231330721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1532055 + ... + 1724428.

It is an arithmetic number, because the mean of its divisors is an integer number (16458270136).

Almost surely, 2^313231330321 is an apocalyptic number.

It is an amenable number.

313231330321 is a deficient number, since it is larger than the sum of its proper divisors (81767152943).

313231330321 is a wasteful number, since it uses less digits than its factorization.

313231330321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3256661 (or 3256654 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 313231330321 its reverse (123033132313), we get a palindrome (436264462634).

The spelling of 313231330321 in words is "three hundred thirteen billion, two hundred thirty-one million, three hundred thirty thousand, three hundred twenty-one".