1244043431 has 2 divisors, whose sum is σ = 1244043432. Its totient is φ = 1244043430.

The previous prime is 1244043407. The next prime is 1244043473. The reversal of 1244043431 is 1343404421.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1244043431 is a prime.

It is a super-2 number, since 2×1244043431² = 3095288116428503522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1244043431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1244043491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622021715 + 622021716.

It is an arithmetic number, because the mean of its divisors is an integer number (622021716).

Almost surely, 2^1244043431 is an apocalyptic number.

1244043431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244043431 is an equidigital number, since it uses as much as digits as its factorization.

1244043431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 1244043431 is about 35270.9998582405. Note that the first 3 decimals coincide. The cubic root of 1244043431 is about 1075.5035480481.

Adding to 1244043431 its reverse (1343404421), we get a palindrome (2587447852).

The spelling of 1244043431 in words is "one billion, two hundred forty-four million, forty-three thousand, four hundred thirty-one".