320441402387 has 2 divisors, whose sum is σ = 320441402388. Its totient is φ = 320441402386.

The previous prime is 320441402381. The next prime is 320441402389. The reversal of 320441402387 is 783204144023.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 320441402387 - 2²⁸ = 320172966931 is a prime.

Together with 320441402389, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320441402387.

It is not a weakly prime, because it can be changed into another prime (320441402381) 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, 160220701193 + 160220701194.

It is an arithmetic number, because the mean of its divisors is an integer number (160220701194).

Almost surely, 2^320441402387 is an apocalyptic number.

320441402387 is a deficient number, since it is larger than the sum of its proper divisors (1).

320441402387 is an equidigital number, since it uses as much as digits as its factorization.

320441402387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 38.

The spelling of 320441402387 in words is "three hundred twenty billion, four hundred forty-one million, four hundred two thousand, three hundred eighty-seven".