313391233 has 2 divisors, whose sum is σ = 313391234. Its totient is φ = 313391232.

The previous prime is 313391219. The next prime is 313391251. The reversal of 313391233 is 332193313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 275161744 + 38229489 = 16588^2 + 6183^2 .

It is a cyclic number.

It is not a de Polignac number, because 313391233 - 2²⁵ = 279836801 is a prime.

It is not a weakly prime, because it can be changed into another prime (313391033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156695616 + 156695617.

It is an arithmetic number, because the mean of its divisors is an integer number (156695617).

Almost surely, 2^313391233 is an apocalyptic number.

It is an amenable number.

313391233 is a deficient number, since it is larger than the sum of its proper divisors (1).

313391233 is an equidigital number, since it uses as much as digits as its factorization.

313391233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4374, while the sum is 28.

The square root of 313391233 is about 17702.8594582909. The cubic root of 313391233 is about 679.2489061231.

The spelling of 313391233 in words is "three hundred thirteen million, three hundred ninety-one thousand, two hundred thirty-three".