331311013020 has 120 divisors (see below), whose sum is σ = 1119283829664. Its totient is φ = 81553474944.

The previous prime is 331311013013. The next prime is 331311013051. The reversal of 331311013020 is 20310113133.

It is a happy number.

331311013020 is a `hidden beast` number, since 331 + 31 + 1 + 0 + 1 + 302 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 331311012984 and 331311013002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7844824 + ... + 7886943.

Almost surely, 2^331311013020 is an apocalyptic number.

331311013020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

331311013020 is an abundant number, since it is smaller than the sum of its proper divisors (787972816644).

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

331311013020 is a wasteful number, since it uses less digits than its factorization.

331311013020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15731801 (or 15731790 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 331311013020 its reverse (20310113133), we get a palindrome (351621126153).

The spelling of 331311013020 in words is "three hundred thirty-one billion, three hundred eleven million, thirteen thousand, twenty".