331303420 has 24 divisors (see below), whose sum is σ = 795128544. Its totient is φ = 113589696.

The previous prime is 331303391. The next prime is 331303447. The reversal of 331303420 is 24303133.

It is a super-2 number, since 2×331303420² = 219523912207392800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1183087 + ... + 1183366.

It is an arithmetic number, because the mean of its divisors is an integer number (33130356).

Almost surely, 2^331303420 is an apocalyptic number.

It is an amenable number.

331303420 is an abundant number, since it is smaller than the sum of its proper divisors (463825124).

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

331303420 is a wasteful number, since it uses less digits than its factorization.

331303420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2366469 (or 2366467 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 331303420 is about 18201.7422243037. The cubic root of 331303420 is about 691.9509443212.

Adding to 331303420 its reverse (24303133), we get a palindrome (355606553).

The spelling of 331303420 in words is "three hundred thirty-one million, three hundred three thousand, four hundred twenty".