444243131 has 2 divisors, whose sum is σ = 444243132. Its totient is φ = 444243130.

The previous prime is 444243119. The next prime is 444243169. The reversal of 444243131 is 131342444.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 444243131 - 2¹⁰ = 444242107 is a prime.

It is a super-2 number, since 2×444243131² = 394703918881366322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 444243131.

It is not a weakly prime, because it can be changed into another prime (444243101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222121565 + 222121566.

It is an arithmetic number, because the mean of its divisors is an integer number (222121566).

Almost surely, 2^444243131 is an apocalyptic number.

444243131 is a deficient number, since it is larger than the sum of its proper divisors (1).

444243131 is an equidigital number, since it uses as much as digits as its factorization.

444243131 is an evil number, because the sum of its binary digits is even.

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

The square root of 444243131 is about 21077.0759594399. The cubic root of 444243131 is about 763.0275877840.

Adding to 444243131 its reverse (131342444), we get a palindrome (575585575).

The spelling of 444243131 in words is "four hundred forty-four million, two hundred forty-three thousand, one hundred thirty-one".