23111203203 has 32 divisors (see below), whose sum is σ = 38262470400. Its totient is φ = 13665153600.

The previous prime is 23111203151. The next prime is 23111203243. The reversal of 23111203203 is 30230211132.

23111203203 is a `hidden beast` number, since 231 + 112 + 0 + 320 + 3 = 666.

It is not a de Polignac number, because 23111203203 - 2¹⁶ = 23111137667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23111203243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 936793 + ... + 961146.

It is an arithmetic number, because the mean of its divisors is an integer number (1195702200).

Almost surely, 2^23111203203 is an apocalyptic number.

23111203203 is a deficient number, since it is larger than the sum of its proper divisors (15151267197).

23111203203 is a wasteful number, since it uses less digits than its factorization.

23111203203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898000 (or 1897994 counting only the distinct ones).

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

Adding to 23111203203 its reverse (30230211132), we get a palindrome (53341414335).

The spelling of 23111203203 in words is "twenty-three billion, one hundred eleven million, two hundred three thousand, two hundred three".