31444533544429 has 2 divisors, whose sum is σ = 31444533544430. Its totient is φ = 31444533544428.

The previous prime is 31444533544399. The next prime is 31444533544559. The reversal of 31444533544429 is 92444533544413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31293619164900 + 150914379529 = 5594070^2 + 388477^2 .

It is an emirp because it is prime and its reverse (92444533544413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31444533544429 - 2¹⁹ = 31444533020141 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31444533544429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31444533554429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15722266772214 + 15722266772215.

It is an arithmetic number, because the mean of its divisors is an integer number (15722266772215).

Almost surely, 2^{31444533544429} is an apocalyptic number.

It is an amenable number.

31444533544429 is a deficient number, since it is larger than the sum of its proper divisors (1).

31444533544429 is an equidigital number, since it uses as much as digits as its factorization.

31444533544429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 49766400, while the sum is 55.

The spelling of 31444533544429 in words is "thirty-one trillion, four hundred forty-four billion, five hundred thirty-three million, five hundred forty-four thousand, four hundred twenty-nine".