320111387 has 2 divisors, whose sum is σ = 320111388. Its totient is φ = 320111386.

The previous prime is 320111369. The next prime is 320111417. The reversal of 320111387 is 783111023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320111387 - 2¹⁴ = 320095003 is a prime.

It is not a weakly prime, because it can be changed into another prime (320111287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160055693 + 160055694.

It is an arithmetic number, because the mean of its divisors is an integer number (160055694).

Almost surely, 2^320111387 is an apocalyptic number.

320111387 is a deficient number, since it is larger than the sum of its proper divisors (1).

320111387 is an equidigital number, since it uses as much as digits as its factorization.

320111387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 320111387 is about 17891.6569104150. The cubic root of 320111387 is about 684.0697315854.

The spelling of 320111387 in words is "three hundred twenty million, one hundred eleven thousand, three hundred eighty-seven".