313117811 has 2 divisors, whose sum is σ = 313117812. Its totient is φ = 313117810.

The previous prime is 313117801. The next prime is 313117813. The reversal of 313117811 is 118711313.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 313117811 - 2²⁶ = 246008947 is a prime.

Together with 313117813, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (313117813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156558905 + 156558906.

It is an arithmetic number, because the mean of its divisors is an integer number (156558906).

Almost surely, 2^313117811 is an apocalyptic number.

313117811 is a deficient number, since it is larger than the sum of its proper divisors (1).

313117811 is an equidigital number, since it uses as much as digits as its factorization.

313117811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 26.

The square root of 313117811 is about 17695.1352354256. The cubic root of 313117811 is about 679.0513089850.

The spelling of 313117811 in words is "three hundred thirteen million, one hundred seventeen thousand, eight hundred eleven".