12118319 has 4 divisors (see below), whose sum is σ = 12199800. Its totient is φ = 12036840.

The previous prime is 12118313. The next prime is 12118349. The reversal of 12118319 is 91381121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91381121 = 13 ⋅7029317.

It is a cyclic number.

It is not a de Polignac number, because 12118319 - 2⁸ = 12118063 is a prime.

It is a super-2 number, since 2×12118319² = 293707310771522, which contains 22 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 (12118313) 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, 40517 + ... + 40814.

It is an arithmetic number, because the mean of its divisors is an integer number (3049950).

Almost surely, 2^12118319 is an apocalyptic number.

12118319 is a deficient number, since it is larger than the sum of its proper divisors (81481).

12118319 is an equidigital number, since it uses as much as digits as its factorization.

12118319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81480.

The product of its digits is 432, while the sum is 26.

The square root of 12118319 is about 3481.1376014171. The cubic root of 12118319 is about 229.6928413986.

The spelling of 12118319 in words is "twelve million, one hundred eighteen thousand, three hundred nineteen".