1444231013 has 2 divisors, whose sum is σ = 1444231014. Its totient is φ = 1444231012.

The previous prime is 1444230979. The next prime is 1444231031. The reversal of 1444231013 is 3101324441.

Together with next prime (1444231031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1257553444 + 186677569 = 35462^2 + 13663^2 .

It is an emirp because it is prime and its reverse (3101324441) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1444231013 is a prime.

It is a super-2 number, since 2×1444231013² = 4171606437822012338, 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 1444231013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1444231513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722115506 + 722115507.

It is an arithmetic number, because the mean of its divisors is an integer number (722115507).

Almost surely, 2^1444231013 is an apocalyptic number.

It is an amenable number.

1444231013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1444231013 is an equidigital number, since it uses as much as digits as its factorization.

1444231013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1444231013 is about 38003.0395231750. The cubic root of 1444231013 is about 1130.3481353528.

Adding to 1444231013 its reverse (3101324441), we get a palindrome (4545555454).

The spelling of 1444231013 in words is "one billion, four hundred forty-four million, two hundred thirty-one thousand, thirteen".