23001321123 has 48 divisors (see below), whose sum is σ = 37234585440. Its totient is φ = 13676794560.

The previous prime is 23001321121. The next prime is 23001321197. The reversal of 23001321123 is 32112310032.

It is not a de Polignac number, because 23001321123 - 2¹ = 23001321121 is a prime.

It is a super-2 number, since 2×23001321123² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23001321096 and 23001321105.

It is not an unprimeable number, because it can be changed into a prime (23001321121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 616773 + ... + 653001.

It is an arithmetic number, because the mean of its divisors is an integer number (775720530).

Almost surely, 2^23001321123 is an apocalyptic number.

23001321123 is a deficient number, since it is larger than the sum of its proper divisors (14233264317).

23001321123 is a wasteful number, since it uses less digits than its factorization.

23001321123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36321 (or 36296 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 23001321123 its reverse (32112310032), we get a palindrome (55113631155).

The spelling of 23001321123 in words is "twenty-three billion, one million, three hundred twenty-one thousand, one hundred twenty-three".