3123394272 has 72 divisors (see below), whose sum is σ = 8892570960. Its totient is φ = 1039910400.

The previous prime is 3123394231. The next prime is 3123394289. The reversal of 3123394272 is 2724933213.

3123394272 is a `hidden beast` number, since 312 + 339 + 4 + 2 + 7 + 2 = 666.

3123394272 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 258772 + ... + 270572.

It is an arithmetic number, because the mean of its divisors is an integer number (123507930).

Almost surely, 2^3123394272 is an apocalyptic number.

3123394272 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

3123394272 is an abundant number, since it is smaller than the sum of its proper divisors (5769176688).

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

3123394272 is a wasteful number, since it uses less digits than its factorization.

3123394272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12736 (or 12725 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 3123394272 is about 55887.3355242491. The cubic root of 3123394272 is about 1461.7584167564.

The spelling of 3123394272 in words is "three billion, one hundred twenty-three million, three hundred ninety-four thousand, two hundred seventy-two".