240023281 has 2 divisors, whose sum is σ = 240023282. Its totient is φ = 240023280.

The previous prime is 240023263. The next prime is 240023293. The reversal of 240023281 is 182320042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227527056 + 12496225 = 15084^2 + 3535^2 .

It is a cyclic number.

It is not a de Polignac number, because 240023281 - 2²⁵ = 206468849 is a prime.

It is a super-2 number, since 2×240023281² = 115222350844009922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (240023081) 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, 120011640 + 120011641.

It is an arithmetic number, because the mean of its divisors is an integer number (120011641).

Almost surely, 2^240023281 is an apocalyptic number.

It is an amenable number.

240023281 is a deficient number, since it is larger than the sum of its proper divisors (1).

240023281 is an equidigital number, since it uses as much as digits as its factorization.

240023281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 240023281 is about 15492.6847576526. The cubic root of 240023281 is about 621.4665948411.

The spelling of 240023281 in words is "two hundred forty million, twenty-three thousand, two hundred eighty-one".