8031947172 has 12 divisors (see below), whose sum is σ = 18741210096. Its totient is φ = 2677315720.

The previous prime is 8031947137. The next prime is 8031947173. The reversal of 8031947172 is 2717491308.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (8031947173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334664454 + ... + 334664477.

It is an arithmetic number, because the mean of its divisors is an integer number (1561767508).

Almost surely, 2^8031947172 is an apocalyptic number.

It is an amenable number.

8031947172 is an abundant number, since it is smaller than the sum of its proper divisors (10709262924).

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

8031947172 is a wasteful number, since it uses less digits than its factorization.

8031947172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669328938 (or 669328936 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 8031947172 is about 89621.1312805189. The cubic root of 8031947172 is about 2002.6587283489.

The spelling of 8031947172 in words is "eight billion, thirty-one million, nine hundred forty-seven thousand, one hundred seventy-two".