313115409 has 16 divisors (see below), whose sum is σ = 464147200. Its totient is φ = 208621008.

The previous prime is 313115389. The next prime is 313115417. The reversal of 313115409 is 904511313.

It is not a de Polignac number, because 313115409 - 2⁹ = 313114897 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313115479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88527 + ... + 91995.

It is an arithmetic number, because the mean of its divisors is an integer number (29009200).

Almost surely, 2^313115409 is an apocalyptic number.

It is an amenable number.

313115409 is a deficient number, since it is larger than the sum of its proper divisors (151031791).

313115409 is a wasteful number, since it uses less digits than its factorization.

313115409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6821 (or 6815 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 313115409 is about 17695.0673635338. The cubic root of 313115409 is about 679.0495725934.

The spelling of 313115409 in words is "three hundred thirteen million, one hundred fifteen thousand, four hundred nine".