8311997 has 16 divisors (see below), whose sum is σ = 9165312. Its totient is φ = 7507200.

The previous prime is 8311991. The next prime is 8312033. The reversal of 8311997 is 7991138.

It is not a de Polignac number, because 8311997 - 2⁴ = 8311981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8311997.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 80648 + ... + 80750.

It is an arithmetic number, because the mean of its divisors is an integer number (572832).

Almost surely, 2^8311997 is an apocalyptic number.

It is an amenable number.

8311997 is a deficient number, since it is larger than the sum of its proper divisors (853315).

8311997 is a wasteful number, since it uses less digits than its factorization.

8311997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268.

The product of its digits is 13608, while the sum is 38.

The square root of 8311997 is about 2883.0534160851. The cubic root of 8311997 is about 202.5668894508.

The spelling of 8311997 in words is "eight million, three hundred eleven thousand, nine hundred ninety-seven".