10343319991 has 2 divisors, whose sum is σ = 10343319992. Its totient is φ = 10343319990.

The previous prime is 10343319989. The next prime is 10343320007. The reversal of 10343319991 is 19991334301.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10343319991 - 2¹ = 10343319989 is a prime.

Together with 10343319989, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10343319901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5171659995 + 5171659996.

It is an arithmetic number, because the mean of its divisors is an integer number (5171659996).

Almost surely, 2^10343319991 is an apocalyptic number.

10343319991 is a deficient number, since it is larger than the sum of its proper divisors (1).

10343319991 is an equidigital number, since it uses as much as digits as its factorization.

10343319991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 78732, while the sum is 43.

The spelling of 10343319991 in words is "ten billion, three hundred forty-three million, three hundred nineteen thousand, nine hundred ninety-one".