331431332 has 12 divisors (see below), whose sum is σ = 580196400. Its totient is φ = 165660936.

The previous prime is 331431299. The next prime is 331431341. The reversal of 331431332 is 233134133.

It is a junction number, because it is equal to n+sod(n) for n = 331431298 and 331431307.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1919 + ... + 25817.

It is an arithmetic number, because the mean of its divisors is an integer number (48349700).

Almost surely, 2^331431332 is an apocalyptic number.

It is an amenable number.

331431332 is a deficient number, since it is larger than the sum of its proper divisors (248765068).

331431332 is a wasteful number, since it uses less digits than its factorization.

331431332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27370 (or 27368 counting only the distinct ones).

The product of its digits is 1944, while the sum is 23.

The square root of 331431332 is about 18205.2556147943. The cubic root of 331431332 is about 692.0399839906.

Adding to 331431332 its reverse (233134133), we get a palindrome (564565465).

The spelling of 331431332 in words is "three hundred thirty-one million, four hundred thirty-one thousand, three hundred thirty-two".