23111131011 has 8 divisors (see below), whose sum is σ = 30818080080. Its totient is φ = 15405801312.

The previous prime is 23111131007. The next prime is 23111131033. The reversal of 23111131011 is 11013111132.

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

It is not a de Polignac number, because 23111131011 - 2² = 23111131007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23111131091) 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, 371140 + ... + 428913.

It is an arithmetic number, because the mean of its divisors is an integer number (3852260010).

Almost surely, 2^23111131011 is an apocalyptic number.

23111131011 is a deficient number, since it is larger than the sum of its proper divisors (7706949069).

23111131011 is an equidigital number, since it uses as much as digits as its factorization.

23111131011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809685.

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 23111131011 its reverse (11013111132), we get a palindrome (34124242143).

The spelling of 23111131011 in words is "twenty-three billion, one hundred eleven million, one hundred thirty-one thousand, eleven".