23011011971 has 2 divisors, whose sum is σ = 23011011972. Its totient is φ = 23011011970.

The previous prime is 23011011943. The next prime is 23011012049. The reversal of 23011011971 is 17911011032.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23011011971 - 2¹⁰ = 23011010947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23011011971.

It is not a weakly prime, because it can be changed into another prime (23011011911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11505505985 + 11505505986.

It is an arithmetic number, because the mean of its divisors is an integer number (11505505986).

Almost surely, 2^23011011971 is an apocalyptic number.

23011011971 is a deficient number, since it is larger than the sum of its proper divisors (1).

23011011971 is an equidigital number, since it uses as much as digits as its factorization.

23011011971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 26.

The spelling of 23011011971 in words is "twenty-three billion, eleven million, eleven thousand, nine hundred seventy-one".