240242231 has 2 divisors, whose sum is σ = 240242232. Its totient is φ = 240242230.

The previous prime is 240242227. The next prime is 240242243. The reversal of 240242231 is 132242042.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 240242231 - 2² = 240242227 is a prime.

It is a super-2 number, since 2×240242231² = 115432659111714722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240242201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120121115 + 120121116.

It is an arithmetic number, because the mean of its divisors is an integer number (120121116).

Almost surely, 2^240242231 is an apocalyptic number.

240242231 is a deficient number, since it is larger than the sum of its proper divisors (1).

240242231 is an equidigital number, since it uses as much as digits as its factorization.

240242231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 240242231 is about 15499.7493850707. The cubic root of 240242231 is about 621.6555053456.

Adding to 240242231 its reverse (132242042), we get a palindrome (372484273).

The spelling of 240242231 in words is "two hundred forty million, two hundred forty-two thousand, two hundred thirty-one".