313404331 has 2 divisors, whose sum is σ = 313404332. Its totient is φ = 313404330.

The previous prime is 313404307. The next prime is 313404361. The reversal of 313404331 is 133404313.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 313404331 - 2²³ = 305015723 is a prime.

It is a super-2 number, since 2×313404331² = 196444549379115122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (313404361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156702165 + 156702166.

It is an arithmetic number, because the mean of its divisors is an integer number (156702166).

Almost surely, 2^313404331 is an apocalyptic number.

313404331 is a deficient number, since it is larger than the sum of its proper divisors (1).

313404331 is an equidigital number, since it uses as much as digits as its factorization.

313404331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 313404331 is about 17703.2293946613. The cubic root of 313404331 is about 679.2583689259.

Adding to 313404331 its reverse (133404313), we get a palindrome (446808644).

The spelling of 313404331 in words is "three hundred thirteen million, four hundred four thousand, three hundred thirty-one".