23091743 has 4 divisors (see below), whose sum is σ = 23888040. Its totient is φ = 22295448.

The previous prime is 23091703. The next prime is 23091769. The reversal of 23091743 is 34719032.

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 23091743 - 2¹⁶ = 23026207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 796267 = 23091743 / (2 + 3 + 0 + 9 + 1 + 7 + 4 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23091703) 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, 398105 + ... + 398162.

It is an arithmetic number, because the mean of its divisors is an integer number (5972010).

Almost surely, 2^23091743 is an apocalyptic number.

23091743 is a deficient number, since it is larger than the sum of its proper divisors (796297).

23091743 is an equidigital number, since it uses as much as digits as its factorization.

23091743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796296.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 23091743 is about 4805.3868730832. The cubic root of 23091743 is about 284.7643193672.

The spelling of 23091743 in words is "twenty-three million, ninety-one thousand, seven hundred forty-three".