3123521672 has 8 divisors (see below), whose sum is σ = 5856603150. Its totient is φ = 1561760832.

The previous prime is 3123521669. The next prime is 3123521683. The reversal of 3123521672 is 2761253213.

It can be written as a sum of positive squares in only one way, i.e., 3123244996 + 276676 = 55886^2 + 526^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195220097 + ... + 195220112.

Almost surely, 2^3123521672 is an apocalyptic number.

It is an amenable number.

3123521672 is a deficient number, since it is larger than the sum of its proper divisors (2733081478).

3123521672 is a wasteful number, since it uses less digits than its factorization.

3123521672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390440215 (or 390440211 counting only the distinct ones).

The product of its digits is 15120, while the sum is 32.

The square root of 3123521672 is about 55888.4753057372. The cubic root of 3123521672 is about 1461.7782910207.

Adding to 3123521672 its reverse (2761253213), we get a palindrome (5884774885).

The spelling of 3123521672 in words is "three billion, one hundred twenty-three million, five hundred twenty-one thousand, six hundred seventy-two".