240040331 has 2 divisors, whose sum is σ = 240040332. Its totient is φ = 240040330.

The previous prime is 240040309. The next prime is 240040369. The reversal of 240040331 is 133040042.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240040331 is a prime.

It is a super-2 number, since 2×240040331² = 115238721013179122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (240040531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120020165 + 120020166.

It is an arithmetic number, because the mean of its divisors is an integer number (120020166).

Almost surely, 2^240040331 is an apocalyptic number.

240040331 is a deficient number, since it is larger than the sum of its proper divisors (1).

240040331 is an equidigital number, since it uses as much as digits as its factorization.

240040331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 240040331 is about 15493.2350075767. The cubic root of 240040331 is about 621.4813097394.

Adding to 240040331 its reverse (133040042), we get a palindrome (373080373).

The spelling of 240040331 in words is "two hundred forty million, forty thousand, three hundred thirty-one".