23231501553 has 16 divisors (see below), whose sum is σ = 33371426816. Its totient is φ = 14290577280.

The previous prime is 23231501483. The next prime is 23231501561. The reversal of 23231501553 is 35510513232.

It is not a de Polignac number, because 23231501553 - 2²⁰ = 23230452977 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23231501553.

It is not an unprimeable number, because it can be changed into a prime (23231501593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19825 + ... + 216462.

It is an arithmetic number, because the mean of its divisors is an integer number (2085714176).

Almost surely, 2^23231501553 is an apocalyptic number.

It is an amenable number.

23231501553 is a deficient number, since it is larger than the sum of its proper divisors (10139925263).

23231501553 is a wasteful number, since it uses less digits than its factorization.

23231501553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238824.

The product of its (nonzero) digits is 13500, while the sum is 30.

The spelling of 23231501553 in words is "twenty-three billion, two hundred thirty-one million, five hundred one thousand, five hundred fifty-three".