313231312 has 20 divisors (see below), whose sum is σ = 619799616. Its totient is φ = 153283040.

The previous prime is 313231301. The next prime is 313231327. The reversal of 313231312 is 213132313.

It is a super-2 number, since 2×313231312² = 196227709634482688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 313231312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207514 + ... + 209017.

Almost surely, 2^313231312 is an apocalyptic number.

It is an amenable number.

313231312 is a deficient number, since it is larger than the sum of its proper divisors (306568304).

313231312 is a wasteful number, since it uses less digits than its factorization.

313231312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416586 (or 416580 counting only the distinct ones).

The product of its digits is 324, while the sum is 19.

The square root of 313231312 is about 17698.3420692448. The cubic root of 313231312 is about 679.1333480654.

Adding to 313231312 its reverse (213132313), we get a palindrome (526363625).

The spelling of 313231312 in words is "three hundred thirteen million, two hundred thirty-one thousand, three hundred twelve".