3155231972 has 24 divisors (see below), whose sum is σ = 5618592000. Its totient is φ = 1549952096.

The previous prime is 3155231951. The next prime is 3155232019. The reversal of 3155231972 is 2791325513.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 563378 + ... + 568950.

It is an arithmetic number, because the mean of its divisors is an integer number (234108000).

Almost surely, 2^3155231972 is an apocalyptic number.

It is an amenable number.

3155231972 is a deficient number, since it is larger than the sum of its proper divisors (2463360028).

3155231972 is a wasteful number, since it uses less digits than its factorization.

3155231972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8035 (or 8033 counting only the distinct ones).

The product of its digits is 56700, while the sum is 38.

The square root of 3155231972 is about 56171.4515746211. The cubic root of 3155231972 is about 1466.7083507666.

The spelling of 3155231972 in words is "three billion, one hundred fifty-five million, two hundred thirty-one thousand, nine hundred seventy-two".