11656231 has 4 divisors (see below), whose sum is σ = 12058200. Its totient is φ = 11254264.

The previous prime is 11656181. The next prime is 11656261. The reversal of 11656231 is 13265611.

11656231 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11656231 - 2⁷ = 11656103 is a prime.

It is a super-2 number, since 2×11656231² = 271735442250722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11656196 and 11656205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11656261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200941 + ... + 200998.

It is an arithmetic number, because the mean of its divisors is an integer number (3014550).

Almost surely, 2^11656231 is an apocalyptic number.

11656231 is a deficient number, since it is larger than the sum of its proper divisors (401969).

11656231 is an equidigital number, since it uses as much as digits as its factorization.

11656231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401968.

The product of its digits is 1080, while the sum is 25.

The square root of 11656231 is about 3414.1222883781. The cubic root of 11656231 is about 226.7354263233.

It can be divided in two parts, 1165 and 6231, that added together give a square (7396 = 86²).

The spelling of 11656231 in words is "eleven million, six hundred fifty-six thousand, two hundred thirty-one".