12591213 has 8 divisors (see below), whose sum is σ = 16812768. Its totient is φ = 8381904.

The previous prime is 12591209. The next prime is 12591233. The reversal of 12591213 is 31219521.

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

It is not a de Polignac number, because 12591213 - 2² = 12591209 is a prime.

It is a super-2 number, since 2×12591213² = 317077289622738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12591233) 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, 306 + ... + 5027.

It is an arithmetic number, because the mean of its divisors is an integer number (2101596).

Almost surely, 2^12591213 is an apocalyptic number.

It is an amenable number.

12591213 is a deficient number, since it is larger than the sum of its proper divisors (4221555).

12591213 is an equidigital number, since it uses as much as digits as its factorization.

12591213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6123.

The product of its digits is 540, while the sum is 24.

The square root of 12591213 is about 3548.4099255864. The cubic root of 12591213 is about 232.6425718223.

The spelling of 12591213 in words is "twelve million, five hundred ninety-one thousand, two hundred thirteen".