12311158 has 32 divisors (see below), whose sum is σ = 20043936. Its totient is φ = 5660928.

The previous prime is 12311153. The next prime is 12311191. The reversal of 12311158 is 85111321.

It is a super-2 number, since 2×12311158² = 303129222601928, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12311153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168610 + ... + 168682.

It is an arithmetic number, because the mean of its divisors is an integer number (626373).

Almost surely, 2^12311158 is an apocalyptic number.

12311158 is a deficient number, since it is larger than the sum of its proper divisors (7732778).

12311158 is a wasteful number, since it uses less digits than its factorization.

12311158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208.

The product of its digits is 240, while the sum is 22.

The square root of 12311158 is about 3508.7259796114. The cubic root of 12311158 is about 230.9048038873.

Adding to 12311158 its reverse (85111321), we get a palindrome (97422479).

The spelling of 12311158 in words is "twelve million, three hundred eleven thousand, one hundred fifty-eight".