12456631 has 16 divisors (see below), whose sum is σ = 14891040. Its totient is φ = 10286080.

The previous prime is 12456581. The next prime is 12456649. The reversal of 12456631 is 13665421.

It is a cyclic number.

It is not a de Polignac number, because 12456631 - 2²³ = 4068023 is a prime.

It is a super-2 number, since 2×12456631² = 310335311740322, 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 12456631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12456671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4275 + ... + 6571.

It is an arithmetic number, because the mean of its divisors is an integer number (930690).

Almost surely, 2^12456631 is an apocalyptic number.

12456631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12456631 is a deficient number, since it is larger than the sum of its proper divisors (2434409).

12456631 is a wasteful number, since it uses less digits than its factorization.

12456631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2354.

The product of its digits is 4320, while the sum is 28.

The square root of 12456631 is about 3529.3952739811. The cubic root of 12456631 is about 231.8107292514.

The spelling of 12456631 in words is "twelve million, four hundred fifty-six thousand, six hundred thirty-one".