240332431 has 2 divisors, whose sum is σ = 240332432. Its totient is φ = 240332430.

The previous prime is 240332423. The next prime is 240332437. The reversal of 240332431 is 134233042.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 240332431 - 2³ = 240332423 is a prime.

It is a super-2 number, since 2×240332431² = 115519354780739522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240332437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120166215 + 120166216.

It is an arithmetic number, because the mean of its divisors is an integer number (120166216).

Almost surely, 2^240332431 is an apocalyptic number.

240332431 is a deficient number, since it is larger than the sum of its proper divisors (1).

240332431 is an equidigital number, since it uses as much as digits as its factorization.

240332431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 240332431 is about 15502.6588364706. The cubic root of 240332431 is about 621.7332967067.

Adding to 240332431 its reverse (134233042), we get a palindrome (374565473).

The spelling of 240332431 in words is "two hundred forty million, three hundred thirty-two thousand, four hundred thirty-one".