313781896668 has 12 divisors (see below), whose sum is σ = 732157758920. Its totient is φ = 104593965552.

The previous prime is 313781896651. The next prime is 313781896669. The reversal of 313781896668 is 866698187313.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 313781896599 and 313781896608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313781896669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13074245683 + ... + 13074245706.

Almost surely, 2^313781896668 is an apocalyptic number.

It is an amenable number.

313781896668 is an abundant number, since it is smaller than the sum of its proper divisors (418375862252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

313781896668 is a wasteful number, since it uses less digits than its factorization.

313781896668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26148491396 (or 26148491394 counting only the distinct ones).

The product of its digits is 62705664, while the sum is 66.

The spelling of 313781896668 in words is "three hundred thirteen billion, seven hundred eighty-one million, eight hundred ninety-six thousand, six hundred sixty-eight".