231301230191 has 2 divisors, whose sum is σ = 231301230192. Its totient is φ = 231301230190.

The previous prime is 231301230161. The next prime is 231301230229. The reversal of 231301230191 is 191032103132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231301230191 - 2³⁰ = 230227488367 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231301230191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231301230131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115650615095 + 115650615096.

It is an arithmetic number, because the mean of its divisors is an integer number (115650615096).

Almost surely, 2^231301230191 is an apocalyptic number.

231301230191 is a deficient number, since it is larger than the sum of its proper divisors (1).

231301230191 is an equidigital number, since it uses as much as digits as its factorization.

231301230191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 26.

The spelling of 231301230191 in words is "two hundred thirty-one billion, three hundred one million, two hundred thirty thousand, one hundred ninety-one".