313111688021 has 12 divisors (see below), whose sum is σ = 344284012800. Its totient is φ = 284547802440.

The previous prime is 313111687943. The next prime is 313111688027. The reversal of 313111688021 is 120886111313.

It is not a de Polignac number, because 313111688021 - 2¹⁰ = 313111686997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313111688027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101051 + ... + 797768.

It is an arithmetic number, because the mean of its divisors is an integer number (28690334400).

Almost surely, 2^313111688021 is an apocalyptic number.

It is an amenable number.

313111688021 is a deficient number, since it is larger than the sum of its proper divisors (31172324779).

313111688021 is a wasteful number, since it uses less digits than its factorization.

313111688021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901720 (or 901709 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 35.

Adding to 313111688021 its reverse (120886111313), we get a palindrome (433997799334).

The spelling of 313111688021 in words is "three hundred thirteen billion, one hundred eleven million, six hundred eighty-eight thousand, twenty-one".