305243023 has 2 divisors, whose sum is σ = 305243024. Its totient is φ = 305243022.

The previous prime is 305243017. The next prime is 305243063. The reversal of 305243023 is 320342503.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-305243023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 305242985 and 305243003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (305243063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152621511 + 152621512.

It is an arithmetic number, because the mean of its divisors is an integer number (152621512).

Almost surely, 2^305243023 is an apocalyptic number.

305243023 is a deficient number, since it is larger than the sum of its proper divisors (1).

305243023 is an equidigital number, since it uses as much as digits as its factorization.

305243023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 22.

The square root of 305243023 is about 17471.2055394011. The cubic root of 305243023 is about 673.3102852669.

Adding to 305243023 its reverse (320342503), we get a palindrome (625585526).

The spelling of 305243023 in words is "three hundred five million, two hundred forty-three thousand, twenty-three".