23031012133 has 4 divisors (see below), whose sum is σ = 23034903840. Its totient is φ = 23027120428.

The previous prime is 23031012047. The next prime is 23031012161. The reversal of 23031012133 is 33121013032.

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 23031012133 - 2⁹ = 23031011621 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23031012133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23031082133) 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 3 ways as a sum of consecutive naturals, for example, 1936963 + ... + 1948816.

It is an arithmetic number, because the mean of its divisors is an integer number (5758725960).

Almost surely, 2^23031012133 is an apocalyptic number.

It is an amenable number.

23031012133 is a deficient number, since it is larger than the sum of its proper divisors (3891707).

23031012133 is an equidigital number, since it uses as much as digits as its factorization.

23031012133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3891706.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 23031012133 its reverse (33121013032), we get a palindrome (56152025165).

The spelling of 23031012133 in words is "twenty-three billion, thirty-one million, twelve thousand, one hundred thirty-three".