313231330320 has 80 divisors (see below), whose sum is σ = 971272007232. Its totient is φ = 83506429440.

The previous prime is 313231330277. The next prime is 313231330397. The reversal of 313231330320 is 23033132313.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×313231330320² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 755355 + ... + 1094085.

Almost surely, 2^313231330320 is an apocalyptic number.

313231330320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

313231330320 is an abundant number, since it is smaller than the sum of its proper divisors (658040676912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

313231330320 is a wasteful number, since it uses less digits than its factorization.

313231330320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342600 (or 342594 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 24.

Adding to 313231330320 its reverse (23033132313), we get a palindrome (336264462633).

The spelling of 313231330320 in words is "three hundred thirteen billion, two hundred thirty-one million, three hundred thirty thousand, three hundred twenty".