331421324 has 48 divisors (see below), whose sum is σ = 669459168. Its totient is φ = 142199808.

The previous prime is 331421303. The next prime is 331421371. The reversal of 331421324 is 423124133.

It is a self number, because there is not a number n which added to its sum of digits gives 331421324.

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, 71114 + ... + 75630.

It is an arithmetic number, because the mean of its divisors is an integer number (13947066).

Almost surely, 2^331421324 is an apocalyptic number.

331421324 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

331421324 is an abundant number, since it is smaller than the sum of its proper divisors (338037844).

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

331421324 is a wasteful number, since it uses less digits than its factorization.

331421324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4634 (or 4632 counting only the distinct ones).

The product of its digits is 1728, while the sum is 23.

The square root of 331421324 is about 18204.9807470373. The cubic root of 331421324 is about 692.0330182381.

Adding to 331421324 its reverse (423124133), we get a palindrome (754545457).

The spelling of 331421324 in words is "three hundred thirty-one million, four hundred twenty-one thousand, three hundred twenty-four".