331346872 has 8 divisors (see below), whose sum is σ = 621275400. Its totient is φ = 165673432.

The previous prime is 331346861. The next prime is 331346887. The reversal of 331346872 is 278643133.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20709172 + ... + 20709187.

It is an arithmetic number, because the mean of its divisors is an integer number (77659425).

Almost surely, 2^331346872 is an apocalyptic number.

It is an amenable number.

331346872 is a deficient number, since it is larger than the sum of its proper divisors (289928528).

331346872 is a wasteful number, since it uses less digits than its factorization.

331346872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41418365 (or 41418361 counting only the distinct ones).

The product of its digits is 72576, while the sum is 37.

The square root of 331346872 is about 18202.9358071713. The cubic root of 331346872 is about 691.9811938712.

The spelling of 331346872 in words is "three hundred thirty-one million, three hundred forty-six thousand, eight hundred seventy-two".