23040032423 has 4 divisors (see below), whose sum is σ = 23662736040. Its totient is φ = 22417328808.

The previous prime is 23040032419. The next prime is 23040032447. The reversal of 23040032423 is 32423004032.

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 23040032423 - 2² = 23040032419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23040032623) 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, 311351753 + ... + 311351826.

It is an arithmetic number, because the mean of its divisors is an integer number (5915684010).

Almost surely, 2^23040032423 is an apocalyptic number.

23040032423 is a deficient number, since it is larger than the sum of its proper divisors (622703617).

23040032423 is an equidigital number, since it uses as much as digits as its factorization.

23040032423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622703616.

The product of its (nonzero) digits is 3456, while the sum is 23.

Adding to 23040032423 its reverse (32423004032), we get a palindrome (55463036455).

The spelling of 23040032423 in words is "twenty-three billion, forty million, thirty-two thousand, four hundred twenty-three".