12355631 has 2 divisors, whose sum is σ = 12355632. Its totient is φ = 12355630.

The previous prime is 12355621. The next prime is 12355649. The reversal of 12355631 is 13655321.

12355631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12355631 is a prime.

It is a super-2 number, since 2×12355631² = 305323234816322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12355631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12355601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6177815 + 6177816.

It is an arithmetic number, because the mean of its divisors is an integer number (6177816).

Almost surely, 2^12355631 is an apocalyptic number.

12355631 is a deficient number, since it is larger than the sum of its proper divisors (1).

12355631 is an equidigital number, since it uses as much as digits as its factorization.

12355631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2700, while the sum is 26.

The square root of 12355631 is about 3515.0577520149. The cubic root of 12355631 is about 231.1825110093.

The spelling of 12355631 in words is "twelve million, three hundred fifty-five thousand, six hundred thirty-one".