23521045423 has 4 divisors (see below), whose sum is σ = 23521775760. Its totient is φ = 23520315088.

The previous prime is 23521045417. The next prime is 23521045511. The reversal of 23521045423 is 32454012532.

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 23521045423 - 2⁵ = 23521045391 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 (23521042423) 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, 314518 + ... + 382051.

It is an arithmetic number, because the mean of its divisors is an integer number (5880443940).

Almost surely, 2^23521045423 is an apocalyptic number.

23521045423 is a deficient number, since it is larger than the sum of its proper divisors (730337).

23521045423 is an equidigital number, since it uses as much as digits as its factorization.

23521045423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730336.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 23521045423 its reverse (32454012532), we get a palindrome (55975057955).

The spelling of 23521045423 in words is "twenty-three billion, five hundred twenty-one million, forty-five thousand, four hundred twenty-three".