244242431 has 4 divisors (see below), whose sum is σ = 244332552. Its totient is φ = 244152312.

The previous prime is 244242421. The next prime is 244242443. The reversal of 244242431 is 134242442.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134242442 = 2 ⋅67121221.

It is a cyclic number.

It is not a de Polignac number, because 244242431 - 2¹⁰ = 244241407 is a prime.

It is a super-2 number, since 2×244242431² = 119308730201579522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 244242431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244242421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40865 + ... + 46458.

It is an arithmetic number, because the mean of its divisors is an integer number (61083138).

Almost surely, 2^244242431 is an apocalyptic number.

244242431 is a deficient number, since it is larger than the sum of its proper divisors (90121).

244242431 is an equidigital number, since it uses as much as digits as its factorization.

244242431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90120.

The product of its digits is 6144, while the sum is 26.

The square root of 244242431 is about 15628.2574524481. The cubic root of 244242431 is about 625.0868623807.

Adding to 244242431 its reverse (134242442), we get a palindrome (378484873).

The spelling of 244242431 in words is "two hundred forty-four million, two hundred forty-two thousand, four hundred thirty-one".