320215587191 has 2 divisors, whose sum is σ = 320215587192. Its totient is φ = 320215587190.

The previous prime is 320215587179. The next prime is 320215587199. The reversal of 320215587191 is 191785512023.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 320215587191 - 2³⁰ = 319141845367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320215587199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160107793595 + 160107793596.

It is an arithmetic number, because the mean of its divisors is an integer number (160107793596).

Almost surely, 2^320215587191 is an apocalyptic number.

320215587191 is a deficient number, since it is larger than the sum of its proper divisors (1).

320215587191 is an equidigital number, since it uses as much as digits as its factorization.

320215587191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 44.

The spelling of 320215587191 in words is "three hundred twenty billion, two hundred fifteen million, five hundred eighty-seven thousand, one hundred ninety-one".