331990218913 has 16 divisors (see below), whose sum is σ = 340008952320. Its totient is φ = 324012522816.

The previous prime is 331990218839. The next prime is 331990219039. The reversal of 331990218913 is 319812099133.

It is a cyclic number.

It is not a de Polignac number, because 331990218913 - 2²¹ = 331988121761 is a prime.

It is a super-2 number, since 2×331990218913² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331990212913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27979420 + ... + 27991282.

It is an arithmetic number, because the mean of its divisors is an integer number (21250559520).

Almost surely, 2^331990218913 is an apocalyptic number.

It is an amenable number.

331990218913 is a deficient number, since it is larger than the sum of its proper divisors (8018733407).

331990218913 is a wasteful number, since it uses less digits than its factorization.

331990218913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13536.

The product of its (nonzero) digits is 314928, while the sum is 49.

The spelling of 331990218913 in words is "three hundred thirty-one billion, nine hundred ninety million, two hundred eighteen thousand, nine hundred thirteen".