23111122013 has 8 divisors (see below), whose sum is σ = 26416216320. Its totient is φ = 19806904080.

The previous prime is 23111122009. The next prime is 23111122057. The reversal of 23111122013 is 31022111132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23111122013 - 2² = 23111122009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23111121982 and 23111122000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23111122063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161573 + ... + 268938.

It is an arithmetic number, because the mean of its divisors is an integer number (3302027040).

Almost surely, 2^23111122013 is an apocalyptic number.

It is an amenable number.

23111122013 is a deficient number, since it is larger than the sum of its proper divisors (3305094307).

23111122013 is an equidigital number, since it uses as much as digits as its factorization.

23111122013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438187.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 23111122013 its reverse (31022111132), we get a palindrome (54133233145).

The spelling of 23111122013 in words is "twenty-three billion, one hundred eleven million, one hundred twenty-two thousand, thirteen".