23131122020111 has 32 divisors (see below), whose sum is σ = 27626613408768. Its totient is φ = 18954213684480.

The previous prime is 23131122020107. The next prime is 23131122020119. The reversal of 23131122020111 is 11102022113132.

It is a cyclic number.

It is not a de Polignac number, because 23131122020111 - 2² = 23131122020107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23131122020119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2646656 + ... + 7298426.

It is an arithmetic number, because the mean of its divisors is an integer number (863331669024).

Almost surely, 2^{23131122020111} is an apocalyptic number.

23131122020111 is a deficient number, since it is larger than the sum of its proper divisors (4495491388657).

23131122020111 is a wasteful number, since it uses less digits than its factorization.

23131122020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4652151.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 23131122020111 its reverse (11102022113132), we get a palindrome (34233144133243).

The spelling of 23131122020111 in words is "twenty-three trillion, one hundred thirty-one billion, one hundred twenty-two million, twenty thousand, one hundred eleven".