12683431 has 4 divisors (see below), whose sum is σ = 13351000. Its totient is φ = 12015864.

The previous prime is 12683423. The next prime is 12683443. The reversal of 12683431 is 13438621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12683431 - 2³ = 12683423 is a prime.

It is a super-2 number, since 2×12683431² = 321738843863522, 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 12683431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12683401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333756 + ... + 333793.

It is an arithmetic number, because the mean of its divisors is an integer number (3337750).

Almost surely, 2^12683431 is an apocalyptic number.

12683431 is a deficient number, since it is larger than the sum of its proper divisors (667569).

12683431 is an equidigital number, since it uses as much as digits as its factorization.

12683431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667568.

The product of its digits is 3456, while the sum is 28.

The square root of 12683431 is about 3561.3804907648. The cubic root of 12683431 is about 233.2091486574.

The spelling of 12683431 in words is "twelve million, six hundred eighty-three thousand, four hundred thirty-one".