331313420 has 48 divisors (see below), whose sum is σ = 710488800. Its totient is φ = 129747456.

The previous prime is 331313419. The next prime is 331313443. The reversal of 331313420 is 24313133.

331313420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 = 331313392 and 331313401.

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, 216779 + ... + 218301.

It is an arithmetic number, because the mean of its divisors is an integer number (14801850).

Almost surely, 2^331313420 is an apocalyptic number.

It is an amenable number.

331313420 is an abundant number, since it is smaller than the sum of its proper divisors (379175380).

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

331313420 is a wasteful number, since it uses less digits than its factorization.

331313420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1754 (or 1752 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 331313420 is about 18202.0169212096. The cubic root of 331313420 is about 691.9579061568.

Adding to 331313420 its reverse (24313133), we get a palindrome (355626553).

The spelling of 331313420 in words is "three hundred thirty-one million, three hundred thirteen thousand, four hundred twenty".