12831631 has 8 divisors (see below), whose sum is σ = 14094720. Its totient is φ = 11627352.

The previous prime is 12831619. The next prime is 12831641. The reversal of 12831631 is 13613821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12831631 - 2¹⁷ = 12700559 is a prime.

It is a super-2 number, since 2×12831631² = 329301508240322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12831596 and 12831605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12831641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14245 + ... + 15118.

It is an arithmetic number, because the mean of its divisors is an integer number (1761840).

Almost surely, 2^12831631 is an apocalyptic number.

12831631 is a deficient number, since it is larger than the sum of its proper divisors (1263089).

12831631 is a wasteful number, since it uses less digits than its factorization.

12831631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29405.

The product of its digits is 864, while the sum is 25.

The square root of 12831631 is about 3582.1266030111. The cubic root of 12831631 is about 234.1139472312.

The spelling of 12831631 in words is "twelve million, eight hundred thirty-one thousand, six hundred thirty-one".