23031012123 has 160 divisors (see below), whose sum is σ = 43144472448. Its totient is φ = 11943936000.

The previous prime is 23031012047. The next prime is 23031012161. The reversal of 23031012123 is 32121013032.

23031012123 is a `hidden beast` number, since 230 + 310 + 1 + 2 + 123 = 666.

It is not a de Polignac number, because 23031012123 - 2¹² = 23031008027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23031012096 and 23031012105.

It is not an unprimeable number, because it can be changed into a prime (23031012223) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 39914811 + ... + 39915387.

Almost surely, 2^23031012123 is an apocalyptic number.

23031012123 is a deficient number, since it is larger than the sum of its proper divisors (20113460325).

23031012123 is a wasteful number, since it uses less digits than its factorization.

23031012123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755 (or 746 counting only the distinct ones).

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

Adding to 23031012123 its reverse (32121013032), we get a palindrome (55152025155).

Subtracting 23031012123 from its reverse (32121013032), we obtain a palindrome (9090000909).

The spelling of 23031012123 in words is "twenty-three billion, thirty-one million, twelve thousand, one hundred twenty-three".