313312330993 has 2 divisors, whose sum is σ = 313312330994. Its totient is φ = 313312330992.

The previous prime is 313312330979. The next prime is 313312330999. The reversal of 313312330993 is 399033213313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 288103783009 + 25208547984 = 536753^2 + 158772^2 .

It is a cyclic number.

It is not a de Polignac number, because 313312330993 - 2²⁵ = 313278776561 is a prime.

It is not a weakly prime, because it can be changed into another prime (313312330999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156656165496 + 156656165497.

It is an arithmetic number, because the mean of its divisors is an integer number (156656165497).

Almost surely, 2^313312330993 is an apocalyptic number.

It is an amenable number.

313312330993 is a deficient number, since it is larger than the sum of its proper divisors (1).

313312330993 is an equidigital number, since it uses as much as digits as its factorization.

313312330993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 118098, while the sum is 40.

The spelling of 313312330993 in words is "three hundred thirteen billion, three hundred twelve million, three hundred thirty thousand, nine hundred ninety-three".