313219691391 has 32 divisors (see below), whose sum is σ = 429382010880. Its totient is φ = 202999586816.

The previous prime is 313219691387. The next prime is 313219691399. The reversal of 313219691391 is 193196912313.

It is a cyclic number.

It is not a de Polignac number, because 313219691391 - 2² = 313219691387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 313219691391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313219691399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12997045 + ... + 13021121.

It is an arithmetic number, because the mean of its divisors is an integer number (13418187840).

Almost surely, 2^313219691391 is an apocalyptic number.

313219691391 is a deficient number, since it is larger than the sum of its proper divisors (116162319489).

313219691391 is a wasteful number, since it uses less digits than its factorization.

313219691391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24743.

The product of its digits is 236196, while the sum is 48.

The spelling of 313219691391 in words is "three hundred thirteen billion, two hundred nineteen million, six hundred ninety-one thousand, three hundred ninety-one".