331130032 has 10 divisors (see below), whose sum is σ = 641564468. Its totient is φ = 165565008.

The previous prime is 331129999. The next prime is 331130053. The reversal of 331130032 is 230031133.

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 20695627 = 331130032 / (3 + 3 + 1 + 1 + 3 + 0 + 0 + 3 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 331129988 and 331130015.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10347798 + ... + 10347829.

Almost surely, 2^331130032 is an apocalyptic number.

It is an amenable number.

331130032 is a deficient number, since it is larger than the sum of its proper divisors (310434436).

331130032 is a wasteful number, since it uses less digits than its factorization.

331130032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20695635 (or 20695629 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 331130032 is about 18196.9786503145. The cubic root of 331130032 is about 691.8302121675.

Adding to 331130032 its reverse (230031133), we get a palindrome (561161165).

The spelling of 331130032 in words is "three hundred thirty-one million, one hundred thirty thousand, thirty-two".