12812631 has 16 divisors (see below), whose sum is σ = 19367040. Its totient is φ = 7469280.

The previous prime is 12812629. The next prime is 12812647. The reversal of 12812631 is 13621821.

It is not a de Polignac number, because 12812631 - 2¹ = 12812629 is a prime.

It is a super-2 number, since 2×12812631² = 328327026284322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12812621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7905 + ... + 9386.

It is an arithmetic number, because the mean of its divisors is an integer number (1210440).

Almost surely, 2^12812631 is an apocalyptic number.

12812631 is a deficient number, since it is larger than the sum of its proper divisors (6554409).

12812631 is a wasteful number, since it uses less digits than its factorization.

12812631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17326.

The product of its digits is 576, while the sum is 24.

The square root of 12812631 is about 3579.4735646461. The cubic root of 12812631 is about 233.9983380699.

The spelling of 12812631 in words is "twelve million, eight hundred twelve thousand, six hundred thirty-one".