1444220131 has 2 divisors, whose sum is σ = 1444220132. Its totient is φ = 1444220130.

The previous prime is 1444220123. The next prime is 1444220137. The reversal of 1444220131 is 1310224441.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1310224441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1444220131 - 2³ = 1444220123 is a prime.

It is a super-2 number, since 2×1444220131² = 4171543573571314322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1444220137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722110065 + 722110066.

It is an arithmetic number, because the mean of its divisors is an integer number (722110066).

Almost surely, 2^1444220131 is an apocalyptic number.

1444220131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1444220131 is an equidigital number, since it uses as much as digits as its factorization.

1444220131 is an evil number, because the sum of its binary digits is even.

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

The square root of 1444220131 is about 38002.8963501468. The cubic root of 1444220131 is about 1130.3452963611.

Adding to 1444220131 its reverse (1310224441), we get a palindrome (2754444572).

The spelling of 1444220131 in words is "one billion, four hundred forty-four million, two hundred twenty thousand, one hundred thirty-one".