240222431 has 2 divisors, whose sum is σ = 240222432. Its totient is φ = 240222430.

The previous prime is 240222371. The next prime is 240222517. The reversal of 240222431 is 134222042.

240222431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240222431 is a prime.

It is a super-2 number, since 2×240222431² = 115413632711099522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240221431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120111215 + 120111216.

It is an arithmetic number, because the mean of its divisors is an integer number (120111216).

Almost surely, 2^240222431 is an apocalyptic number.

240222431 is a deficient number, since it is larger than the sum of its proper divisors (1).

240222431 is an equidigital number, since it uses as much as digits as its factorization.

240222431 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 240222431 is about 15499.1106519052. The cubic root of 240222431 is about 621.6384265871.

Adding to 240222431 its reverse (134222042), we get a palindrome (374444473).

The spelling of 240222431 in words is "two hundred forty million, two hundred twenty-two thousand, four hundred thirty-one".