23111983 has 2 divisors, whose sum is σ = 23111984. Its totient is φ = 23111982.

The previous prime is 23111981. The next prime is 23112007. The reversal of 23111983 is 38911132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23111983 - 2¹ = 23111981 is a prime.

Together with 23111981, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23111981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11555991 + 11555992.

It is an arithmetic number, because the mean of its divisors is an integer number (11555992).

Almost surely, 2^23111983 is an apocalyptic number.

23111983 is a deficient number, since it is larger than the sum of its proper divisors (1).

23111983 is an equidigital number, since it uses as much as digits as its factorization.

23111983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 28.

The square root of 23111983 is about 4807.4923816892. The cubic root of 23111983 is about 284.8474940716.

The spelling of 23111983 in words is "twenty-three million, one hundred eleven thousand, nine hundred eighty-three".