313818431 has 2 divisors, whose sum is σ = 313818432. Its totient is φ = 313818430.

The previous prime is 313818409. The next prime is 313818451. The reversal of 313818431 is 134818313.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313818431 is a prime.

It is a super-2 number, since 2×313818431² = 196964015270603522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313818451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156909215 + 156909216.

It is an arithmetic number, because the mean of its divisors is an integer number (156909216).

Almost surely, 2^313818431 is an apocalyptic number.

313818431 is a deficient number, since it is larger than the sum of its proper divisors (1).

313818431 is an equidigital number, since it uses as much as digits as its factorization.

313818431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 32.

The square root of 313818431 is about 17714.9211401011. The cubic root of 313818431 is about 679.5574044618.

The spelling of 313818431 in words is "three hundred thirteen million, eight hundred eighteen thousand, four hundred thirty-one".