12531746 has 4 divisors (see below), whose sum is σ = 18797622. Its totient is φ = 6265872.

The previous prime is 12531709. The next prime is 12531763. The reversal of 12531746 is 64713521.

12531746 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12524521 + 7225 = 3539^2 + 85^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3132935 + ... + 3132938.

Almost surely, 2^12531746 is an apocalyptic number.

12531746 is a deficient number, since it is larger than the sum of its proper divisors (6265876).

12531746 is an equidigital number, since it uses as much as digits as its factorization.

12531746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6265875.

The product of its digits is 5040, while the sum is 29.

The square root of 12531746 is about 3540.0206214089. The cubic root of 12531746 is about 232.2757447641.

The spelling of 12531746 in words is "twelve million, five hundred thirty-one thousand, seven hundred forty-six".