8311993 has 8 divisors (see below), whose sum is σ = 8710848. Its totient is φ = 7916304.

The previous prime is 8311991. The next prime is 8312033. The reversal of 8311993 is 3991138.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8311993 - 2¹ = 8311991 is a prime.

It is a Duffinian number.

8311993 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8311991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5871 + ... + 7147.

It is an arithmetic number, because the mean of its divisors is an integer number (1088856).

Almost surely, 2^8311993 is an apocalyptic number.

It is an amenable number.

8311993 is a deficient number, since it is larger than the sum of its proper divisors (398855).

8311993 is a wasteful number, since it uses less digits than its factorization.

8311993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1583.

The product of its digits is 5832, while the sum is 34.

The square root of 8311993 is about 2883.0527223761. The cubic root of 8311993 is about 202.5668569569.

The spelling of 8311993 in words is "eight million, three hundred eleven thousand, nine hundred ninety-three".