31486348867 has 2 divisors, whose sum is σ = 31486348868. Its totient is φ = 31486348866.

The previous prime is 31486348823. The next prime is 31486348891. The reversal of 31486348867 is 76884368413.

It is a strong prime.

It is an emirp because it is prime and its reverse (76884368413) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31486348867 is a prime.

It is not a weakly prime, because it can be changed into another prime (31486340867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15743174433 + 15743174434.

It is an arithmetic number, because the mean of its divisors is an integer number (15743174434).

Almost surely, 2^31486348867 is an apocalyptic number.

31486348867 is a deficient number, since it is larger than the sum of its proper divisors (1).

31486348867 is an equidigital number, since it uses as much as digits as its factorization.

31486348867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18579456, while the sum is 58.

The spelling of 31486348867 in words is "thirty-one billion, four hundred eighty-six million, three hundred forty-eight thousand, eight hundred sixty-seven".