313431311 has 2 divisors, whose sum is σ = 313431312. Its totient is φ = 313431310.

The previous prime is 313431299. The next prime is 313431337. The reversal of 313431311 is 113134313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 313431311 - 2⁶ = 313431247 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313431341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156715655 + 156715656.

It is an arithmetic number, because the mean of its divisors is an integer number (156715656).

Almost surely, 2^313431311 is an apocalyptic number.

313431311 is a deficient number, since it is larger than the sum of its proper divisors (1).

313431311 is an equidigital number, since it uses as much as digits as its factorization.

313431311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 324, while the sum is 20.

The square root of 313431311 is about 17703.9913861253. The cubic root of 313431311 is about 679.2778601104.

Adding to 313431311 its reverse (113134313), we get a palindrome (426565624).

It can be divided in two parts, 3134313 and 11, that multiplied together give a palindrome (34477443).

The spelling of 313431311 in words is "three hundred thirteen million, four hundred thirty-one thousand, three hundred eleven".