12842631 has 10 divisors (see below), whose sum is σ = 19184792. Its totient is φ = 8561700.

The previous prime is 12842629. The next prime is 12842647. The reversal of 12842631 is 13624821.

12842631 is a `hidden beast` number, since 1 + 28 + 4 + 2 + 631 = 666.

It is not a de Polignac number, because 12842631 - 2¹ = 12842629 is a prime.

It is a super-2 number, since 2×12842631² = 329866342004322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12842595 and 12842604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12842831) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 79195 + ... + 79356.

Almost surely, 2^12842631 is an apocalyptic number.

12842631 is a deficient number, since it is larger than the sum of its proper divisors (6342161).

12842631 is an equidigital number, since it uses as much as digits as its factorization.

12842631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158563 (or 158554 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 12842631 is about 3583.6616748795. The cubic root of 12842631 is about 234.1808266971.

The spelling of 12842631 in words is "twelve million, eight hundred forty-two thousand, six hundred thirty-one".