12811379 has 8 divisors (see below), whose sum is σ = 14757888. Its totient is φ = 10893960.

The previous prime is 12811373. The next prime is 12811397. The reversal of 12811379 is 97311821.

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

It is not a de Polignac number, because 12811379 - 2⁴ = 12811363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12811373) 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, 6317 + ... + 8094.

It is an arithmetic number, because the mean of its divisors is an integer number (1844736).

Almost surely, 2^12811379 is an apocalyptic number.

12811379 is a deficient number, since it is larger than the sum of its proper divisors (1946509).

12811379 is a wasteful number, since it uses less digits than its factorization.

12811379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14545.

The product of its digits is 3024, while the sum is 32.

The square root of 12811379 is about 3579.2986743215. The cubic root of 12811379 is about 233.9907160220.

The spelling of 12811379 in words is "twelve million, eight hundred eleven thousand, three hundred seventy-nine".