313021013021 has 4 divisors (see below), whose sum is σ = 329495803200. Its totient is φ = 296546222844.

The previous prime is 313021012981. The next prime is 313021013027. The reversal of 313021013021 is 120310120313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 313021013021 - 2¹⁸ = 313020750877 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 (313021013027) 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, 8237395061 + ... + 8237395098.

It is an arithmetic number, because the mean of its divisors is an integer number (82373950800).

Almost surely, 2^313021013021 is an apocalyptic number.

It is an amenable number.

313021013021 is a deficient number, since it is larger than the sum of its proper divisors (16474790179).

313021013021 is a wasteful number, since it uses less digits than its factorization.

313021013021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16474790178.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 313021013021 its reverse (120310120313), we get a palindrome (433331133334).

The spelling of 313021013021 in words is "three hundred thirteen billion, twenty-one million, thirteen thousand, twenty-one".