313330891 has 2 divisors, whose sum is σ = 313330892. Its totient is φ = 313330890.

The previous prime is 313330883. The next prime is 313330933. The reversal of 313330891 is 198033313.

It is a weak prime.

It is an emirp because it is prime and its reverse (198033313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 313330891 - 2³ = 313330883 is a prime.

It is not a weakly prime, because it can be changed into another prime (313330861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156665445 + 156665446.

It is an arithmetic number, because the mean of its divisors is an integer number (156665446).

Almost surely, 2^313330891 is an apocalyptic number.

313330891 is a deficient number, since it is larger than the sum of its proper divisors (1).

313330891 is an equidigital number, since it uses as much as digits as its factorization.

313330891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 313330891 is about 17701.1550753051. The cubic root of 313330891 is about 679.2053079365.

The spelling of 313330891 in words is "three hundred thirteen million, three hundred thirty thousand, eight hundred ninety-one".