997323 has 4 divisors (see below), whose sum is σ = 1329768. Its totient is φ = 664880.

The previous prime is 997319. The next prime is 997327. The reversal of 997323 is 323799.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (997319) and next prime (997327).

It is a cyclic number.

It is not a de Polignac number, because 997323 - 2² = 997319 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (997327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166218 + ... + 166223.

It is an arithmetic number, because the mean of its divisors is an integer number (332442).

2⁹⁹⁷³²³ is an apocalyptic number.

997323 is a deficient number, since it is larger than the sum of its proper divisors (332445).

997323 is a wasteful number, since it uses less digits than its factorization.

997323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332444.

The product of its digits is 10206, while the sum is 33.

The square root of 997323 is about 998.6606030078. The cubic root of 997323 is about 99.9106869222.

The spelling of 997323 in words is "nine hundred ninety-seven thousand, three hundred twenty-three".