313431212 has 24 divisors (see below), whose sum is σ = 573974016. Its totient is φ = 149477328.

The previous prime is 313431199. The next prime is 313431229. The reversal of 313431212 is 212134313.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29123 + ... + 38405.

It is an arithmetic number, because the mean of its divisors is an integer number (23915584).

Almost surely, 2^313431212 is an apocalyptic number.

It is an amenable number.

313431212 is a deficient number, since it is larger than the sum of its proper divisors (260542804).

313431212 is a wasteful number, since it uses less digits than its factorization.

313431212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9677 (or 9675 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 313431212 is about 17703.9885901454. The cubic root of 313431212 is about 679.2777885918.

Adding to 313431212 its reverse (212134313), we get a palindrome (525565525).

The spelling of 313431212 in words is "three hundred thirteen million, four hundred thirty-one thousand, two hundred twelve".