Search a number
-
+
23380081 is a prime number
BaseRepresentation
bin101100100110…
…0000001110001
31121222211102221
41121030001301
521441130311
62153041041
7402504334
oct131140161
947884387
1023380081
111221988a
1279b6181
134ac7a8a
14316861b
1520bc671
hex164c071

23380081 has 2 divisors, whose sum is σ = 23380082. Its totient is φ = 23380080.

The previous prime is 23380079. The next prime is 23380139. The reversal of 23380081 is 18008332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17715681 + 5664400 = 4209^2 + 2380^2 .

It is a cyclic number.

It is not a de Polignac number, because 23380081 - 21 = 23380079 is a prime.

It is a super-2 number, since 2×233800812 = 1093256375133122, which contains 22 as substring.

Together with 23380079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (23380481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11690040 + 11690041.

It is an arithmetic number, because the mean of its divisors is an integer number (11690041).

Almost surely, 223380081 is an apocalyptic number.

It is an amenable number.

23380081 is a deficient number, since it is larger than the sum of its proper divisors (1).

23380081 is an equidigital number, since it uses as much as digits as its factorization.

23380081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 23380081 is about 4835.2953374122. The cubic root of 23380081 is about 285.9446687424.

The spelling of 23380081 in words is "twenty-three million, three hundred eighty thousand, eighty-one".