31550434214539 has 2 divisors, whose sum is σ = 31550434214540. Its totient is φ = 31550434214538.

The previous prime is 31550434214527. The next prime is 31550434214543. The reversal of 31550434214539 is 93541243405513.

It is a strong prime.

It is an emirp because it is prime and its reverse (93541243405513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31550434214539 - 2²⁷ = 31550299996811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31550434214492 and 31550434214501.

It is not a weakly prime, because it can be changed into another prime (31550434914539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15775217107269 + 15775217107270.

It is an arithmetic number, because the mean of its divisors is an integer number (15775217107270).

Almost surely, 2^{31550434214539} is an apocalyptic number.

31550434214539 is a deficient number, since it is larger than the sum of its proper divisors (1).

31550434214539 is an equidigital number, since it uses as much as digits as its factorization.

31550434214539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888000, while the sum is 49.

The spelling of 31550434214539 in words is "thirty-one trillion, five hundred fifty billion, four hundred thirty-four million, two hundred fourteen thousand, five hundred thirty-nine".