443040131021 has 2 divisors, whose sum is σ = 443040131022. Its totient is φ = 443040131020.

The previous prime is 443040130943. The next prime is 443040131033. The reversal of 443040131021 is 120131040344.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 396126736996 + 46913394025 = 629386^2 + 216595^2 .

It is a cyclic number.

It is not a de Polignac number, because 443040131021 - 2¹⁰ = 443040129997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (443040131081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221520065510 + 221520065511.

It is an arithmetic number, because the mean of its divisors is an integer number (221520065511).

Almost surely, 2^443040131021 is an apocalyptic number.

It is an amenable number.

443040131021 is a deficient number, since it is larger than the sum of its proper divisors (1).

443040131021 is an equidigital number, since it uses as much as digits as its factorization.

443040131021 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.

Adding to 443040131021 its reverse (120131040344), we get a palindrome (563171171365).

The spelling of 443040131021 in words is "four hundred forty-three billion, forty million, one hundred thirty-one thousand, twenty-one".