12859431 has 8 divisors (see below), whose sum is σ = 18464880. Its totient is φ = 7913472.

The previous prime is 12859417. The next prime is 12859433. The reversal of 12859431 is 13495821.

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

It is not a de Polignac number, because 12859431 - 2⁷ = 12859303 is a prime.

It is a super-2 number, since 2×12859431² = 330729931287522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12859392 and 12859401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12859433) 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, 164826 + ... + 164903.

It is an arithmetic number, because the mean of its divisors is an integer number (2308110).

Almost surely, 2^12859431 is an apocalyptic number.

12859431 is a deficient number, since it is larger than the sum of its proper divisors (5605449).

12859431 is a wasteful number, since it uses less digits than its factorization.

12859431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329745.

The product of its digits is 8640, while the sum is 33.

The square root of 12859431 is about 3586.0048800859. The cubic root of 12859431 is about 234.2828962190.

The spelling of 12859431 in words is "twelve million, eight hundred fifty-nine thousand, four hundred thirty-one".