331665612 has 24 divisors (see below), whose sum is σ = 807534336. Its totient is φ = 105748368.

The previous prime is 331665583. The next prime is 331665613. The reversal of 331665612 is 216566133.

It is a super-2 number, since 2×331665612² = 220004156366669088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (331665613) 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 7 ways as a sum of consecutive naturals, for example, 600568 + ... + 601119.

It is an arithmetic number, because the mean of its divisors is an integer number (33647264).

Almost surely, 2^331665612 is an apocalyptic number.

It is an amenable number.

331665612 is an abundant number, since it is smaller than the sum of its proper divisors (475868724).

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

331665612 is a wasteful number, since it uses less digits than its factorization.

331665612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201717 (or 1201715 counting only the distinct ones).

The product of its digits is 19440, while the sum is 33.

The square root of 331665612 is about 18211.6888837911. The cubic root of 331665612 is about 692.2030071417.

The spelling of 331665612 in words is "three hundred thirty-one million, six hundred sixty-five thousand, six hundred twelve".