240533281 has 2 divisors, whose sum is σ = 240533282. Its totient is φ = 240533280.

The previous prime is 240533261. The next prime is 240533291. The reversal of 240533281 is 182335042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209786256 + 30747025 = 14484^2 + 5545^2 .

It is a cyclic number.

It is not a de Polignac number, because 240533281 - 2⁹ = 240532769 is a prime.

It is a super-2 number, since 2×240533281² = 115712518537249922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (240533201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120266640 + 120266641.

It is an arithmetic number, because the mean of its divisors is an integer number (120266641).

Almost surely, 2^240533281 is an apocalyptic number.

It is an amenable number.

240533281 is a deficient number, since it is larger than the sum of its proper divisors (1).

240533281 is an equidigital number, since it uses as much as digits as its factorization.

240533281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 240533281 is about 15509.1354046575. The cubic root of 240533281 is about 621.9064462638.

The spelling of 240533281 in words is "two hundred forty million, five hundred thirty-three thousand, two hundred eighty-one".