313131316 has 12 divisors (see below), whose sum is σ = 549428320. Its totient is φ = 156151800.

The previous prime is 313131257. The next prime is 313131317. The reversal of 313131316 is 613131313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313131317) 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, 101760 + ... + 104791.

Almost surely, 2^313131316 is an apocalyptic number.

It is an amenable number.

313131316 is a deficient number, since it is larger than the sum of its proper divisors (236297004).

313131316 is a wasteful number, since it uses less digits than its factorization.

313131316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206934 (or 206932 counting only the distinct ones).

The product of its digits is 486, while the sum is 22.

The square root of 313131316 is about 17695.5168333677. The cubic root of 313131316 is about 679.0610715044.

Adding to 313131316 its reverse (613131313), we get a palindrome (926262629).

The spelling of 313131316 in words is "three hundred thirteen million, one hundred thirty-one thousand, three hundred sixteen".