23533531345231 has 4 divisors (see below), whose sum is σ = 23864989533264. Its totient is φ = 23202073157200.

The previous prime is 23533531345223. The next prime is 23533531345243. The reversal of 23533531345231 is 13254313533532.

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 23533531345231 - 2³ = 23533531345223 is a prime.

It is a super-2 number, since 2×23533531345231² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23533531345211) 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, 165729093910 + ... + 165729094051.

It is an arithmetic number, because the mean of its divisors is an integer number (5966247383316).

Almost surely, 2^{23533531345231} is an apocalyptic number.

23533531345231 is a deficient number, since it is larger than the sum of its proper divisors (331458188033).

23533531345231 is an equidigital number, since it uses as much as digits as its factorization.

23533531345231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331458188032.

The product of its digits is 1458000, while the sum is 43.

Adding to 23533531345231 its reverse (13254313533532), we get a palindrome (36787844878763).

The spelling of 23533531345231 in words is "twenty-three trillion, five hundred thirty-three billion, five hundred thirty-one million, three hundred forty-five thousand, two hundred thirty-one".