313809812 has 12 divisors (see below), whose sum is σ = 568104180. Its totient is φ = 151494336.

The previous prime is 313809809. The next prime is 313809823. The reversal of 313809812 is 218908313.

It can be written as a sum of positive squares in 2 ways, for example, as 70324996 + 243484816 = 8386^2 + 15604^2 .

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, 1352513 + ... + 1352744.

It is an arithmetic number, because the mean of its divisors is an integer number (47342015).

Almost surely, 2^313809812 is an apocalyptic number.

It is an amenable number.

313809812 is a deficient number, since it is larger than the sum of its proper divisors (254294368).

313809812 is a wasteful number, since it uses less digits than its factorization.

313809812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2705290 (or 2705288 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 313809812 is about 17714.6778689312. The cubic root of 313809812 is about 679.5511830736.

The spelling of 313809812 in words is "three hundred thirteen million, eight hundred nine thousand, eight hundred twelve".