244424431 has 2 divisors, whose sum is σ = 244424432. Its totient is φ = 244424430.

The previous prime is 244424423. The next prime is 244424437. The reversal of 244424431 is 134424442.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 244424431 - 2³ = 244424423 is a prime.

It is a super-2 number, since 2×244424431² = 119486604939347522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 244424431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244424437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122212215 + 122212216.

It is an arithmetic number, because the mean of its divisors is an integer number (122212216).

Almost surely, 2^244424431 is an apocalyptic number.

244424431 is a deficient number, since it is larger than the sum of its proper divisors (1).

244424431 is an equidigital number, since it uses as much as digits as its factorization.

244424431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12288, while the sum is 28.

The square root of 244424431 is about 15634.0791542067. The cubic root of 244424431 is about 625.2420873378.

Adding to 244424431 its reverse (134424442), we get a palindrome (378848873).

The spelling of 244424431 in words is "two hundred forty-four million, four hundred twenty-four thousand, four hundred thirty-one".