31080067987 has 2 divisors, whose sum is σ = 31080067988. Its totient is φ = 31080067986.

The previous prime is 31080067957. The next prime is 31080068003. The reversal of 31080067987 is 78976008013.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31080067987 - 2¹⁵ = 31080035219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31080067987.

It is not a weakly prime, because it can be changed into another prime (31080067957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15540033993 + 15540033994.

It is an arithmetic number, because the mean of its divisors is an integer number (15540033994).

Almost surely, 2^31080067987 is an apocalyptic number.

31080067987 is a deficient number, since it is larger than the sum of its proper divisors (1).

31080067987 is an equidigital number, since it uses as much as digits as its factorization.

31080067987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 508032, while the sum is 49.

The spelling of 31080067987 in words is "thirty-one billion, eighty million, sixty-seven thousand, nine hundred eighty-seven".