331031130320 has 80 divisors (see below), whose sum is σ = 876120388992. Its totient is φ = 115141255680.

The previous prime is 331031130317. The next prime is 331031130347. The reversal of 331031130320 is 23031130133.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 331031130292 and 331031130301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8157407 + ... + 8197886.

Almost surely, 2^331031130320 is an apocalyptic number.

It is an amenable number.

331031130320 is an abundant number, since it is smaller than the sum of its proper divisors (545089258672).

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

331031130320 is a wasteful number, since it uses less digits than its factorization.

331031130320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16355340 (or 16355334 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 331031130320 its reverse (23031130133), we get a palindrome (354062260453).

The spelling of 331031130320 in words is "three hundred thirty-one billion, thirty-one million, one hundred thirty thousand, three hundred twenty".