11687123 has 4 divisors (see below), whose sum is σ = 13356720. Its totient is φ = 10017528.

The previous prime is 11687119. The next prime is 11687129. The reversal of 11687123 is 32178611.

11687123 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.

It is a cyclic number.

It is not a de Polignac number, because 11687123 - 2² = 11687119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11687129) 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, 834788 + ... + 834801.

It is an arithmetic number, because the mean of its divisors is an integer number (3339180).

Almost surely, 2^11687123 is an apocalyptic number.

11687123 is a deficient number, since it is larger than the sum of its proper divisors (1669597).

11687123 is an equidigital number, since it uses as much as digits as its factorization.

11687123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1669596.

The product of its digits is 2016, while the sum is 29.

The square root of 11687123 is about 3418.6434444089. The cubic root of 11687123 is about 226.9355519656.

The spelling of 11687123 in words is "eleven million, six hundred eighty-seven thousand, one hundred twenty-three".