12531479 has 8 divisors (see below), whose sum is σ = 12962160. Its totient is φ = 12108096.

The previous prime is 12531473. The next prime is 12531511. The reversal of 12531479 is 97413521.

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

It is a cyclic number.

It is not a de Polignac number, because 12531479 - 2²⁰ = 11482903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12531473) 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, 1787 + ... + 5315.

It is an arithmetic number, because the mean of its divisors is an integer number (1620270).

Almost surely, 2^12531479 is an apocalyptic number.

12531479 is a deficient number, since it is larger than the sum of its proper divisors (430681).

12531479 is an equidigital number, since it uses as much as digits as its factorization.

12531479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3649.

The product of its digits is 7560, while the sum is 32.

The square root of 12531479 is about 3539.9829095633. The cubic root of 12531479 is about 232.2740951386.

The spelling of 12531479 in words is "twelve million, five hundred thirty-one thousand, four hundred seventy-nine".