23131233013 has 4 divisors (see below), whose sum is σ = 26435694880. Its totient is φ = 19826771148.

The previous prime is 23131233007. The next prime is 23131233019. The reversal of 23131233013 is 31033213132.

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 an interprime number because it is at equal distance from previous prime (23131233007) and next prime (23131233019).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23131233013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23131233019) 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, 1652230923 + ... + 1652230936.

It is an arithmetic number, because the mean of its divisors is an integer number (6608923720).

Almost surely, 2^23131233013 is an apocalyptic number.

It is an amenable number.

23131233013 is a deficient number, since it is larger than the sum of its proper divisors (3304461867).

23131233013 is an equidigital number, since it uses as much as digits as its factorization.

23131233013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3304461866.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 23131233013 its reverse (31033213132), we get a palindrome (54164446145).

The spelling of 23131233013 in words is "twenty-three billion, one hundred thirty-one million, two hundred thirty-three thousand, thirteen".