313012319891 has 2 divisors, whose sum is σ = 313012319892. Its totient is φ = 313012319890.

The previous prime is 313012319839. The next prime is 313012320017. The reversal of 313012319891 is 198913210313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 313012319891 - 2¹⁰ = 313012318867 is a prime.

It is a super-4 number, since 4×313012319891⁴ (a number of 47 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (313012319821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156506159945 + 156506159946.

It is an arithmetic number, because the mean of its divisors is an integer number (156506159946).

Almost surely, 2^313012319891 is an apocalyptic number.

313012319891 is a deficient number, since it is larger than the sum of its proper divisors (1).

313012319891 is an equidigital number, since it uses as much as digits as its factorization.

313012319891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 41.

The spelling of 313012319891 in words is "three hundred thirteen billion, twelve million, three hundred nineteen thousand, eight hundred ninety-one".