331313243420 has 24 divisors (see below), whose sum is σ = 696237374448. Its totient is φ = 132433952000.

The previous prime is 331313243419. The next prime is 331313243441. The reversal of 331313243420 is 24342313133.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5679341 + ... + 5737380.

It is an arithmetic number, because the mean of its divisors is an integer number (29009890602).

Almost surely, 2^331313243420 is an apocalyptic number.

It is an amenable number.

331313243420 is an abundant number, since it is smaller than the sum of its proper divisors (364924131028).

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

331313243420 is a wasteful number, since it uses less digits than its factorization.

331313243420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11418181 (or 11418179 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 331313243420 its reverse (24342313133), we get a palindrome (355655556553).

The spelling of 331313243420 in words is "three hundred thirty-one billion, three hundred thirteen million, two hundred forty-three thousand, four hundred twenty".