31966985339 has 2 divisors, whose sum is σ = 31966985340. Its totient is φ = 31966985338.

The previous prime is 31966985293. The next prime is 31966985363. The reversal of 31966985339 is 93358966913.

It is a strong prime.

It is an emirp because it is prime and its reverse (93358966913) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31966985339 - 2²⁰ = 31965936763 is a prime.

It is not a weakly prime, because it can be changed into another prime (31966985539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15983492669 + 15983492670.

It is an arithmetic number, because the mean of its divisors is an integer number (15983492670).

Almost surely, 2^31966985339 is an apocalyptic number.

31966985339 is a deficient number, since it is larger than the sum of its proper divisors (1).

31966985339 is an equidigital number, since it uses as much as digits as its factorization.

31966985339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28343520, while the sum is 62.

The spelling of 31966985339 in words is "thirty-one billion, nine hundred sixty-six million, nine hundred eighty-five thousand, three hundred thirty-nine".