12431717 has 4 divisors (see below), whose sum is σ = 12465420. Its totient is φ = 12398016.

The previous prime is 12431711. The next prime is 12431759. The reversal of 12431717 is 71713421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71713421 = 13 ⋅5516417.

It can be written as a sum of positive squares in 2 ways, for example, as 7761796 + 4669921 = 2786^2 + 2161^2 .

It is a cyclic number.

It is not a de Polignac number, because 12431717 - 2⁴ = 12431701 is a prime.

It is a super-4 number, since 4×12431717⁴ (a number of 29 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12431711) 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, 16292 + ... + 17037.

It is an arithmetic number, because the mean of its divisors is an integer number (3116355).

Almost surely, 2^12431717 is an apocalyptic number.

It is an amenable number.

12431717 is a deficient number, since it is larger than the sum of its proper divisors (33703).

12431717 is an equidigital number, since it uses as much as digits as its factorization.

12431717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33702.

The product of its digits is 1176, while the sum is 26.

The square root of 12431717 is about 3525.8640075874. The cubic root of 12431717 is about 231.6560810396.

The spelling of 12431717 in words is "twelve million, four hundred thirty-one thousand, seven hundred seventeen".