1244131507 has 2 divisors, whose sum is σ = 1244131508. Its totient is φ = 1244131506.

The previous prime is 1244131423. The next prime is 1244131529. The reversal of 1244131507 is 7051314421.

It is a strong prime.

It is an emirp because it is prime and its reverse (7051314421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1244131507 - 2⁷ = 1244131379 is a prime.

It is not a weakly prime, because it can be changed into another prime (1244131547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622065753 + 622065754.

It is an arithmetic number, because the mean of its divisors is an integer number (622065754).

Almost surely, 2^1244131507 is an apocalyptic number.

1244131507 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244131507 is an equidigital number, since it uses as much as digits as its factorization.

1244131507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 1244131507 is about 35272.2483972882. The cubic root of 1244131507 is about 1075.5289286773.

Adding to 1244131507 its reverse (7051314421), we get a palindrome (8295445928).

The spelling of 1244131507 in words is "one billion, two hundred forty-four million, one hundred thirty-one thousand, five hundred seven".