331504232 has 8 divisors (see below), whose sum is σ = 621570450. Its totient is φ = 165752112.

The previous prime is 331504231. The next prime is 331504253. The reversal of 331504232 is 232405133.

It can be written as a sum of positive squares in only one way, i.e., 331458436 + 45796 = 18206^2 + 214^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 331504198 and 331504207.

It is not an unprimeable number, because it can be changed into a prime (331504231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20719007 + ... + 20719022.

Almost surely, 2^331504232 is an apocalyptic number.

It is an amenable number.

331504232 is a deficient number, since it is larger than the sum of its proper divisors (290066218).

331504232 is a wasteful number, since it uses less digits than its factorization.

331504232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41438035 (or 41438031 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 331504232 is about 18207.2576737959. The cubic root of 331504232 is about 692.0907195040.

Adding to 331504232 its reverse (232405133), we get a palindrome (563909365).

Subtracting from 331504232 its reverse (232405133), we obtain a palindrome (99099099).

The spelling of 331504232 in words is "three hundred thirty-one million, five hundred four thousand, two hundred thirty-two".