244121431 has 4 divisors (see below), whose sum is σ = 249315552. Its totient is φ = 238927312.

The previous prime is 244121389. The next prime is 244121441. The reversal of 244121431 is 134121442.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-244121431 is a prime.

It is a super-2 number, since 2×244121431² = 119190546146975522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244121441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2596990 + ... + 2597083.

It is an arithmetic number, because the mean of its divisors is an integer number (62328888).

Almost surely, 2^244121431 is an apocalyptic number.

244121431 is a deficient number, since it is larger than the sum of its proper divisors (5194121).

244121431 is an equidigital number, since it uses as much as digits as its factorization.

244121431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5194120.

The product of its digits is 768, while the sum is 22.

The square root of 244121431 is about 15624.3857799275. The cubic root of 244121431 is about 624.9836206908.

Adding to 244121431 its reverse (134121442), we get a palindrome (378242873).

The spelling of 244121431 in words is "two hundred forty-four million, one hundred twenty-one thousand, four hundred thirty-one".