320347091187 has 16 divisors (see below), whose sum is σ = 474734126880. Its totient is φ = 213499097856.

The previous prime is 320347091173. The next prime is 320347091213. The reversal of 320347091187 is 781190743023.

It is not a de Polignac number, because 320347091187 - 2⁴ = 320347091171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320347091137) 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 in 15 ways as a sum of consecutive naturals, for example, 1733478 + ... + 1909355.

It is an arithmetic number, because the mean of its divisors is an integer number (29670882930).

Almost surely, 2^320347091187 is an apocalyptic number.

320347091187 is a deficient number, since it is larger than the sum of its proper divisors (154387035693).

320347091187 is a wasteful number, since it uses less digits than its factorization.

320347091187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3646099 (or 3646093 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 320347091187 in words is "three hundred twenty billion, three hundred forty-seven million, ninety-one thousand, one hundred eighty-seven".