12445631 has 4 divisors (see below), whose sum is σ = 13577064. Its totient is φ = 11314200.

The previous prime is 12445613. The next prime is 12445639. The reversal of 12445631 is 13654421.

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

It is a cyclic number.

It is not a de Polignac number, because 12445631 - 2⁶ = 12445567 is a prime.

It is a super-2 number, since 2×12445631² = 309787461976322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12445631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12445639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 565700 + ... + 565721.

It is an arithmetic number, because the mean of its divisors is an integer number (3394266).

Almost surely, 2^12445631 is an apocalyptic number.

12445631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12445631 is a deficient number, since it is larger than the sum of its proper divisors (1131433).

12445631 is a wasteful number, since it uses less digits than its factorization.

12445631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131432.

The product of its digits is 2880, while the sum is 26.

The square root of 12445631 is about 3527.8365891861. The cubic root of 12445631 is about 231.7424746013.

The spelling of 12445631 in words is "twelve million, four hundred forty-five thousand, six hundred thirty-one".