12531419 has 4 divisors (see below), whose sum is σ = 12870144. Its totient is φ = 12192696.

The previous prime is 12531391. The next prime is 12531437. The reversal of 12531419 is 91413521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91413521 = 8011 ⋅11411.

It is a cyclic number.

It is not a de Polignac number, because 12531419 - 2⁸ = 12531163 is a prime.

It is a super-2 number, since 2×12531419² = 314072924307122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12531019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169307 + ... + 169380.

It is an arithmetic number, because the mean of its divisors is an integer number (3217536).

Almost surely, 2^12531419 is an apocalyptic number.

12531419 is a deficient number, since it is larger than the sum of its proper divisors (338725).

12531419 is an equidigital number, since it uses as much as digits as its factorization.

12531419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338724.

The product of its digits is 1080, while the sum is 26.

The square root of 12531419 is about 3539.9744349359. The cubic root of 12531419 is about 232.2737244330.

The spelling of 12531419 in words is "twelve million, five hundred thirty-one thousand, four hundred nineteen".