331666152 has 32 divisors (see below), whose sum is σ = 833518080. Its totient is φ = 109975040.

The previous prime is 331666151. The next prime is 331666163. The reversal of 331666152 is 251666133.

It is a super-2 number, since 2×331666152² = 220004872764974208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (331666151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31593 + ... + 40760.

It is an arithmetic number, because the mean of its divisors is an integer number (26047440).

Almost surely, 2^331666152 is an apocalyptic number.

It is an amenable number.

331666152 is an abundant number, since it is smaller than the sum of its proper divisors (501851928).

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

331666152 is a wasteful number, since it uses less digits than its factorization.

331666152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72553 (or 72549 counting only the distinct ones).

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

The square root of 331666152 is about 18211.7037094282. The cubic root of 331666152 is about 692.2033828107.

The spelling of 331666152 in words is "three hundred thirty-one million, six hundred sixty-six thousand, one hundred fifty-two".