12431739 has 8 divisors (see below), whose sum is σ = 16847632. Its totient is φ = 8151840.

The previous prime is 12431711. The next prime is 12431759. The reversal of 12431739 is 93713421.

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

It is not a de Polignac number, because 12431739 - 2⁷ = 12431611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12431759) 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, 33784 + ... + 34149.

It is an arithmetic number, because the mean of its divisors is an integer number (2105954).

Almost surely, 2^12431739 is an apocalyptic number.

12431739 is a deficient number, since it is larger than the sum of its proper divisors (4415893).

12431739 is an equidigital number, since it uses as much as digits as its factorization.

12431739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67997.

The product of its digits is 4536, while the sum is 30.

The square root of 12431739 is about 3525.8671273887. The cubic root of 12431739 is about 231.6562176909.

The spelling of 12431739 in words is "twelve million, four hundred thirty-one thousand, seven hundred thirty-nine".