313311212993 has 2 divisors, whose sum is σ = 313311212994. Its totient is φ = 313311212992.

The previous prime is 313311212989. The next prime is 313311213049. The reversal of 313311212993 is 399212113313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210049889344 + 103261323649 = 458312^2 + 321343^2 .

It is a cyclic number.

It is not a de Polignac number, because 313311212993 - 2² = 313311212989 is a prime.

It is not a weakly prime, because it can be changed into another prime (313311212693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156655606496 + 156655606497.

It is an arithmetic number, because the mean of its divisors is an integer number (156655606497).

Almost surely, 2^313311212993 is an apocalyptic number.

It is an amenable number.

313311212993 is a deficient number, since it is larger than the sum of its proper divisors (1).

313311212993 is an equidigital number, since it uses as much as digits as its factorization.

313311212993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26244, while the sum is 38.

The spelling of 313311212993 in words is "three hundred thirteen billion, three hundred eleven million, two hundred twelve thousand, nine hundred ninety-three".