3129342172 has 36 divisors (see below), whose sum is σ = 6087175920. Its totient is φ = 1406426560.

The previous prime is 3129342131. The next prime is 3129342191. The reversal of 3129342172 is 2712439213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6753 + ... + 79399.

It is an arithmetic number, because the mean of its divisors is an integer number (169088220).

Almost surely, 2^3129342172 is an apocalyptic number.

It is an amenable number.

3129342172 is a deficient number, since it is larger than the sum of its proper divisors (2957833748).

3129342172 is a wasteful number, since it uses less digits than its factorization.

3129342172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72762 (or 72749 counting only the distinct ones).

The product of its digits is 18144, while the sum is 34.

The square root of 3129342172 is about 55940.5235227558. The cubic root of 3129342172 is about 1462.6857070729.

The spelling of 3129342172 in words is "three billion, one hundred twenty-nine million, three hundred forty-two thousand, one hundred seventy-two".