320231119991 has 2 divisors, whose sum is σ = 320231119992. Its totient is φ = 320231119990.

The previous prime is 320231119939. The next prime is 320231119997. The reversal of 320231119991 is 199911132023.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 320231119991 - 2⁶ = 320231119927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320231119997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160115559995 + 160115559996.

It is an arithmetic number, because the mean of its divisors is an integer number (160115559996).

Almost surely, 2^320231119991 is an apocalyptic number.

320231119991 is a deficient number, since it is larger than the sum of its proper divisors (1).

320231119991 is an equidigital number, since it uses as much as digits as its factorization.

320231119991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26244, while the sum is 41.

The spelling of 320231119991 in words is "three hundred twenty billion, two hundred thirty-one million, one hundred nineteen thousand, nine hundred ninety-one".