331617172 has 6 divisors (see below), whose sum is σ = 580330058. Its totient is φ = 165808584.

The previous prime is 331617157. The next prime is 331617179. The reversal of 331617172 is 271716133.

It can be written as a sum of positive squares in only one way, i.e., 329640336 + 1976836 = 18156^2 + 1406^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331617179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41452143 + ... + 41452150.

Almost surely, 2^331617172 is an apocalyptic number.

It is an amenable number.

331617172 is a deficient number, since it is larger than the sum of its proper divisors (248712886).

331617172 is a wasteful number, since it uses less digits than its factorization.

331617172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82904297 (or 82904295 counting only the distinct ones).

The product of its digits is 5292, while the sum is 31.

The square root of 331617172 is about 18210.3589201311. The cubic root of 331617172 is about 692.1693065861.

The spelling of 331617172 in words is "three hundred thirty-one million, six hundred seventeen thousand, one hundred seventy-two".