181313023 has 2 divisors, whose sum is σ = 181313024. Its totient is φ = 181313022.

The previous prime is 181313009. The next prime is 181313051. The reversal of 181313023 is 320313181.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 181313023 - 2¹⁷ = 181181951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 181312985 and 181313003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (181313003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90656511 + 90656512.

It is an arithmetic number, because the mean of its divisors is an integer number (90656512).

Almost surely, 2^181313023 is an apocalyptic number.

181313023 is a deficient number, since it is larger than the sum of its proper divisors (1).

181313023 is an equidigital number, since it uses as much as digits as its factorization.

181313023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 181313023 is about 13465.2524298655. The cubic root of 181313023 is about 565.9911836291.

The spelling of 181313023 in words is "one hundred eighty-one million, three hundred thirteen thousand, twenty-three".