23111543251 has 2 divisors, whose sum is σ = 23111543252. Its totient is φ = 23111543250.

The previous prime is 23111543249. The next prime is 23111543281. The reversal of 23111543251 is 15234511132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23111543251 - 2¹ = 23111543249 is a prime.

Together with 23111543249, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (23111543201) 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 as a sum of consecutive naturals, namely, 11555771625 + 11555771626.

It is an arithmetic number, because the mean of its divisors is an integer number (11555771626).

Almost surely, 2^23111543251 is an apocalyptic number.

23111543251 is a deficient number, since it is larger than the sum of its proper divisors (1).

23111543251 is an equidigital number, since it uses as much as digits as its factorization.

23111543251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 28.

The spelling of 23111543251 in words is "twenty-three billion, one hundred eleven million, five hundred forty-three thousand, two hundred fifty-one".