11965123 has 4 divisors (see below), whose sum is σ = 11972088. Its totient is φ = 11958160.

The previous prime is 11965091. The next prime is 11965157. The reversal of 11965123 is 32156911.

11965123 is digitally balanced in base 2, 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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11965123 - 2⁵ = 11965091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11965091 and 11965100.

It is not an unprimeable number, because it can be changed into a prime (11965423) 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, 1143 + ... + 5023.

It is an arithmetic number, because the mean of its divisors is an integer number (2993022).

Almost surely, 2^11965123 is an apocalyptic number.

11965123 is a deficient number, since it is larger than the sum of its proper divisors (6965).

11965123 is an equidigital number, since it uses as much as digits as its factorization.

11965123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6964.

The product of its digits is 1620, while the sum is 28.

The square root of 11965123 is about 3459.0638907080. The cubic root of 11965123 is about 228.7208321773.

The spelling of 11965123 in words is "eleven million, nine hundred sixty-five thousand, one hundred twenty-three".