230220281 has 2 divisors, whose sum is σ = 230220282. Its totient is φ = 230220280.

The previous prime is 230220257. The next prime is 230220349. The reversal of 230220281 is 182022032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135955600 + 94264681 = 11660^2 + 9709^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230220281 is a prime.

It is a super-2 number, since 2×230220281² = 106002755567437922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (230220251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115110140 + 115110141.

It is an arithmetic number, because the mean of its divisors is an integer number (115110141).

Almost surely, 2^230220281 is an apocalyptic number.

It is an amenable number.

230220281 is a deficient number, since it is larger than the sum of its proper divisors (1).

230220281 is an equidigital number, since it uses as much as digits as its factorization.

230220281 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 20.

The square root of 230220281 is about 15173.0115995474. The cubic root of 230220281 is about 612.8881058812. Note that the first 3 decimals are identical.

The spelling of 230220281 in words is "two hundred thirty million, two hundred twenty thousand, two hundred eighty-one".