320311112987 has 2 divisors, whose sum is σ = 320311112988. Its totient is φ = 320311112986.

The previous prime is 320311112983. The next prime is 320311113037. The reversal of 320311112987 is 789211113023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320311112987 - 2² = 320311112983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320311112987.

It is not a weakly prime, because it can be changed into another prime (320311112981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160155556493 + 160155556494.

It is an arithmetic number, because the mean of its divisors is an integer number (160155556494).

Almost surely, 2^320311112987 is an apocalyptic number.

320311112987 is a deficient number, since it is larger than the sum of its proper divisors (1).

320311112987 is an equidigital number, since it uses as much as digits as its factorization.

320311112987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 38.

The spelling of 320311112987 in words is "three hundred twenty billion, three hundred eleven million, one hundred twelve thousand, nine hundred eighty-seven".