9991332343 has 4 divisors (see below), whose sum is σ = 10517191960. Its totient is φ = 9465472728.

The previous prime is 9991332341. The next prime is 9991332349. The reversal of 9991332343 is 3432331999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3432331999 = 1031 ⋅3329129.

It is a cyclic number.

It is not a de Polignac number, because 9991332343 - 2¹ = 9991332341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9991332293 and 9991332302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9991332341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262929780 + ... + 262929817.

It is an arithmetic number, because the mean of its divisors is an integer number (2629297990).

Almost surely, 2^9991332343 is an apocalyptic number.

9991332343 is a deficient number, since it is larger than the sum of its proper divisors (525859617).

9991332343 is a wasteful number, since it uses less digits than its factorization.

9991332343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525859616.

The product of its digits is 472392, while the sum is 46.

The square root of 9991332343 is about 99956.6523198931. The cubic root of 9991332343 is about 2153.8120467379.

The spelling of 9991332343 in words is "nine billion, nine hundred ninety-one million, three hundred thirty-two thousand, three hundred forty-three".