313337891 has 2 divisors, whose sum is σ = 313337892. Its totient is φ = 313337890.

The previous prime is 313337833. The next prime is 313337903. The reversal of 313337891 is 198733313.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 313337891 - 2¹⁰ = 313336867 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (313330891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156668945 + 156668946.

It is an arithmetic number, because the mean of its divisors is an integer number (156668946).

Almost surely, 2^313337891 is an apocalyptic number.

313337891 is a deficient number, since it is larger than the sum of its proper divisors (1).

313337891 is an equidigital number, since it uses as much as digits as its factorization.

313337891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 38.

The square root of 313337891 is about 17701.3528014104. The cubic root of 313337891 is about 679.2103658501.

The spelling of 313337891 in words is "three hundred thirteen million, three hundred thirty-seven thousand, eight hundred ninety-one".