8181023 has 2 divisors, whose sum is σ = 8181024. Its totient is φ = 8181022.

The previous prime is 8181011. The next prime is 8181049. The reversal of 8181023 is 3201818.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8181023 - 2⁴ = 8181007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8181023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8181053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4090511 + 4090512.

It is an arithmetic number, because the mean of its divisors is an integer number (4090512).

Almost surely, 2^8181023 is an apocalyptic number.

8181023 is a deficient number, since it is larger than the sum of its proper divisors (1).

8181023 is an equidigital number, since it uses as much as digits as its factorization.

8181023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 8181023 is about 2860.2487654049. The cubic root of 8181023 is about 201.4972876754.

The spelling of 8181023 in words is "eight million, one hundred eighty-one thousand, twenty-three".