31445445443039 has 2 divisors, whose sum is σ = 31445445443040. Its totient is φ = 31445445443038.

The previous prime is 31445445443017. The next prime is 31445445443089. The reversal of 31445445443039 is 93034454454413.

It is a weak prime.

It is an emirp because it is prime and its reverse (93034454454413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31445445443039 - 2¹⁶ = 31445445377503 is a prime.

It is a super-2 number, since 2×31445445443039² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31445445443089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15722722721519 + 15722722721520.

It is an arithmetic number, because the mean of its divisors is an integer number (15722722721520).

Almost surely, 2^{31445445443039} is an apocalyptic number.

31445445443039 is a deficient number, since it is larger than the sum of its proper divisors (1).

31445445443039 is an equidigital number, since it uses as much as digits as its factorization.

31445445443039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24883200, while the sum is 53.

The spelling of 31445445443039 in words is "thirty-one trillion, four hundred forty-five billion, four hundred forty-five million, four hundred forty-three thousand, thirty-nine".