12131584 has 18 divisors (see below), whose sum is σ = 24216290. Its totient is φ = 6065664.

The previous prime is 12131573. The next prime is 12131621. The reversal of 12131584 is 48513121.

It can be written as a sum of positive squares in only one way, i.e., 6969600 + 5161984 = 2640^2 + 2272^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23439 + ... + 23950.

Almost surely, 2^12131584 is an apocalyptic number.

It is an amenable number.

12131584 is a deficient number, since it is larger than the sum of its proper divisors (12084706).

12131584 is an frugal number, since it uses more digits than its factorization.

12131584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47405 (or 47391 counting only the distinct ones).

The product of its digits is 960, while the sum is 25.

The square root of 12131584 is about 3483.0423482927. The cubic root of 12131584 is about 229.7766199185.

The spelling of 12131584 in words is "twelve million, one hundred thirty-one thousand, five hundred eighty-four".