23123364391 has 4 divisors (see below), whose sum is σ = 23227056832. Its totient is φ = 23019671952.

The previous prime is 23123364379. The next prime is 23123364409. The reversal of 23123364391 is 19346332132.

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 23123364391 - 2¹⁷ = 23123233319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23123364391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23123364361) 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, 51845886 + ... + 51846331.

It is an arithmetic number, because the mean of its divisors is an integer number (5806764208).

Almost surely, 2^23123364391 is an apocalyptic number.

23123364391 is a deficient number, since it is larger than the sum of its proper divisors (103692441).

23123364391 is a wasteful number, since it uses less digits than its factorization.

23123364391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103692440.

The product of its digits is 69984, while the sum is 37.

The spelling of 23123364391 in words is "twenty-three billion, one hundred twenty-three million, three hundred sixty-four thousand, three hundred ninety-one".