331430232 has 64 divisors (see below), whose sum is σ = 1002654720. Its totient is φ = 89123328.

The previous prime is 331430219. The next prime is 331430237. The reversal of 331430232 is 232034133.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 331430199 and 331430208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331430237) 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 in 15 ways as a sum of consecutive naturals, for example, 55168 + ... + 60879.

It is an arithmetic number, because the mean of its divisors is an integer number (15666480).

Almost surely, 2^331430232 is an apocalyptic number.

It is an amenable number.

331430232 is an abundant number, since it is smaller than the sum of its proper divisors (671224488).

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

331430232 is a wasteful number, since it uses less digits than its factorization.

331430232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116080 (or 116076 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 331430232 is about 18205.2254037131. The cubic root of 331430232 is about 692.0392183772.

Adding to 331430232 its reverse (232034133), we get a palindrome (563464365).

The spelling of 331430232 in words is "three hundred thirty-one million, four hundred thirty thousand, two hundred thirty-two".