12531633 has 4 divisors (see below), whose sum is σ = 16708848. Its totient is φ = 8354420.

The previous prime is 12531593. The next prime is 12531637. The reversal of 12531633 is 33613521.

It is a happy number.

12531633 is digitally balanced in base 3, 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12531633 - 2⁶ = 12531569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12531637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2088603 + ... + 2088608.

It is an arithmetic number, because the mean of its divisors is an integer number (4177212).

Almost surely, 2^12531633 is an apocalyptic number.

It is an amenable number.

12531633 is a deficient number, since it is larger than the sum of its proper divisors (4177215).

12531633 is an equidigital number, since it uses as much as digits as its factorization.

12531633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4177214.

The product of its digits is 1620, while the sum is 24.

The square root of 12531633 is about 3540.0046610139. The cubic root of 12531633 is about 232.2750466109.

The spelling of 12531633 in words is "twelve million, five hundred thirty-one thousand, six hundred thirty-three".