20340143191 has 2 divisors, whose sum is σ = 20340143192. Its totient is φ = 20340143190.

The previous prime is 20340143167. The next prime is 20340143287. The reversal of 20340143191 is 19134104302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20340143191 - 2¹⁵ = 20340110423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20340143111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10170071595 + 10170071596.

It is an arithmetic number, because the mean of its divisors is an integer number (10170071596).

Almost surely, 2^20340143191 is an apocalyptic number.

20340143191 is a deficient number, since it is larger than the sum of its proper divisors (1).

20340143191 is an equidigital number, since it uses as much as digits as its factorization.

20340143191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

Adding to 20340143191 its reverse (19134104302), we get a palindrome (39474247493).

The spelling of 20340143191 in words is "twenty billion, three hundred forty million, one hundred forty-three thousand, one hundred ninety-one".