23231113133 has 4 divisors (see below), whose sum is σ = 23231771328. Its totient is φ = 23230454940.

The previous prime is 23231113123. The next prime is 23231113159. The reversal of 23231113133 is 33131113232.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23231113133 - 2⁶ = 23231113069 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23231113099 and 23231113108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23231113123) 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, 272963 + ... + 347808.

It is an arithmetic number, because the mean of its divisors is an integer number (5807942832).

Almost surely, 2^23231113133 is an apocalyptic number.

It is an amenable number.

23231113133 is a deficient number, since it is larger than the sum of its proper divisors (658195).

23231113133 is an equidigital number, since it uses as much as digits as its factorization.

23231113133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658194.

The product of its digits is 972, while the sum is 23.

Adding to 23231113133 its reverse (33131113232), we get a palindrome (56362226365).

Subtracting 23231113133 from its reverse (33131113232), we obtain a palindrome (9900000099).

The spelling of 23231113133 in words is "twenty-three billion, two hundred thirty-one million, one hundred thirteen thousand, one hundred thirty-three".