331665332 has 12 divisors (see below), whose sum is σ = 585839520. Its totient is φ = 164282616.

The previous prime is 331665331. The next prime is 331665377. The reversal of 331665332 is 233566133.

It is a super-2 number, since 2×331665332² = 220003784901340448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331665331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387032 + ... + 387887.

It is an arithmetic number, because the mean of its divisors is an integer number (48819960).

Almost surely, 2^331665332 is an apocalyptic number.

It is an amenable number.

331665332 is a deficient number, since it is larger than the sum of its proper divisors (254174188).

331665332 is a wasteful number, since it uses less digits than its factorization.

331665332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775030 (or 775028 counting only the distinct ones).

The product of its digits is 29160, while the sum is 32.

The square root of 331665332 is about 18211.6811964190. The cubic root of 331665332 is about 692.2028123502.

The spelling of 331665332 in words is "three hundred thirty-one million, six hundred sixty-five thousand, three hundred thirty-two".