23181071 has 2 divisors, whose sum is σ = 23181072. Its totient is φ = 23181070.

The previous prime is 23181023. The next prime is 23181091. The reversal of 23181071 is 17018132.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23181071 - 2²² = 18986767 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23181001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11590535 + 11590536.

It is an arithmetic number, because the mean of its divisors is an integer number (11590536).

Almost surely, 2^23181071 is an apocalyptic number.

23181071 is a deficient number, since it is larger than the sum of its proper divisors (1).

23181071 is an equidigital number, since it uses as much as digits as its factorization.

23181071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 23181071 is about 4814.6724706879. The cubic root of 23181071 is about 285.1310405910.

The spelling of 23181071 in words is "twenty-three million, one hundred eighty-one thousand, seventy-one".