331668036 has 36 divisors (see below), whose sum is σ = 958152832. Its totient is φ = 94762224.

The previous prime is 331668031. The next prime is 331668059. The reversal of 331668036 is 630866133.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×331668036² = 220007372208194592, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (331668031) 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 11 ways as a sum of consecutive naturals, for example, 657820 + ... + 658323.

Almost surely, 2^331668036 is an apocalyptic number.

331668036 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

331668036 is an abundant number, since it is smaller than the sum of its proper divisors (626484796).

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

331668036 is a wasteful number, since it uses less digits than its factorization.

331668036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316160 (or 1316155 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 331668036 is about 18211.7554343342. The cubic root of 331668036 is about 692.2046934747.

The spelling of 331668036 in words is "three hundred thirty-one million, six hundred sixty-eight thousand, thirty-six".