240323231 has 2 divisors, whose sum is σ = 240323232. Its totient is φ = 240323230.

The previous prime is 240323221. The next prime is 240323269. The reversal of 240323231 is 132323042.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240323231 is a prime.

It is a super-2 number, since 2×240323231² = 115510510716558722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240323221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120161615 + 120161616.

It is an arithmetic number, because the mean of its divisors is an integer number (120161616).

Almost surely, 2^240323231 is an apocalyptic number.

240323231 is a deficient number, since it is larger than the sum of its proper divisors (1).

240323231 is an equidigital number, since it uses as much as digits as its factorization.

240323231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 240323231 is about 15502.3621103366. The cubic root of 240323231 is about 621.7253632243.

Adding to 240323231 its reverse (132323042), we get a palindrome (372646273).

The spelling of 240323231 in words is "two hundred forty million, three hundred twenty-three thousand, two hundred thirty-one".