313021021131 has 160 divisors (see below), whose sum is σ = 615418328448. Its totient is φ = 153852825600.

The previous prime is 313021021127. The next prime is 313021021151. The reversal of 313021021131 is 131120120313.

It is not a de Polignac number, because 313021021131 - 2² = 313021021127 is a prime.

It is a super-2 number, since 2×313021021131² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (313021021111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 12643641 + ... + 12668373.

Almost surely, 2^313021021131 is an apocalyptic number.

313021021131 is a deficient number, since it is larger than the sum of its proper divisors (302397307317).

313021021131 is a wasteful number, since it uses less digits than its factorization.

313021021131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24883 (or 24874 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 313021021131 its reverse (131120120313), we get a palindrome (444141141444).

The spelling of 313021021131 in words is "three hundred thirteen billion, twenty-one million, twenty-one thousand, one hundred thirty-one".