331312432 has 20 divisors (see below), whose sum is σ = 700274376. Its totient is φ = 150596480.

The previous prime is 331312427. The next prime is 331312453. The reversal of 331312432 is 234213133.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 941053 + ... + 941404.

Almost surely, 2^331312432 is an apocalyptic number.

It is an amenable number.

331312432 is an abundant number, since it is smaller than the sum of its proper divisors (368961944).

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

331312432 is a wasteful number, since it uses less digits than its factorization.

331312432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1882476 (or 1882470 counting only the distinct ones).

The product of its digits is 1296, while the sum is 22.

The square root of 331312432 is about 18201.9897813398. The cubic root of 331312432 is about 691.9572183337.

Adding to 331312432 its reverse (234213133), we get a palindrome (565525565).

The spelling of 331312432 in words is "three hundred thirty-one million, three hundred twelve thousand, four hundred thirty-two".