11391723 has 24 divisors (see below), whose sum is σ = 19070688. Its totient is φ = 6417792.

The previous prime is 11391707. The next prime is 11391749. The reversal of 11391723 is 32719311.

11391723 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11391723 - 2⁴ = 11391707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11391703) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3361 + ... + 5837.

It is an arithmetic number, because the mean of its divisors is an integer number (794612).

Almost surely, 2^11391723 is an apocalyptic number.

11391723 is a deficient number, since it is larger than the sum of its proper divisors (7678965).

11391723 is a wasteful number, since it uses less digits than its factorization.

11391723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2563 (or 2560 counting only the distinct ones).

The product of its digits is 1134, while the sum is 27.

The square root of 11391723 is about 3375.1626627468. The cubic root of 11391723 is about 225.0072293973.

The spelling of 11391723 in words is "eleven million, three hundred ninety-one thousand, seven hundred twenty-three".