313140431 has 2 divisors, whose sum is σ = 313140432. Its totient is φ = 313140430.

The previous prime is 313140427. The next prime is 313140449. The reversal of 313140431 is 134041313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 313140431 - 2² = 313140427 is a prime.

It is a super-2 number, since 2×313140431² = 196113859053731522, 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 (313140481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156570215 + 156570216.

It is an arithmetic number, because the mean of its divisors is an integer number (156570216).

Almost surely, 2^313140431 is an apocalyptic number.

313140431 is a deficient number, since it is larger than the sum of its proper divisors (1).

313140431 is an equidigital number, since it uses as much as digits as its factorization.

313140431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 313140431 is about 17695.7743826033. The cubic root of 313140431 is about 679.0676604137.

Adding to 313140431 its reverse (134041313), we get a palindrome (447181744).

The spelling of 313140431 in words is "three hundred thirteen million, one hundred forty thousand, four hundred thirty-one".