3123235872 has 72 divisors (see below), whose sum is σ = 9267882624. Its totient is φ = 995812224.

The previous prime is 3123235867. The next prime is 3123235873. The reversal of 3123235872 is 2785323213.

3123235872 is a `hidden beast` number, since 3 + 1 + 232 + 358 + 72 = 666.

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 not an unprimeable number, because it can be changed into a prime (3123235873) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 229128 + ... + 242375.

It is an arithmetic number, because the mean of its divisors is an integer number (128720592).

Almost surely, 2^3123235872 is an apocalyptic number.

3123235872 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

3123235872 is an abundant number, since it is smaller than the sum of its proper divisors (6144646752).

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

3123235872 is a wasteful number, since it uses less digits than its factorization.

3123235872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471542 (or 471531 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 3123235872 is about 55885.9183694784. The cubic root of 3123235872 is about 1461.7337057713.

The spelling of 3123235872 in words is "three billion, one hundred twenty-three million, two hundred thirty-five thousand, eight hundred seventy-two".