9997123 has 2 divisors, whose sum is σ = 9997124. Its totient is φ = 9997122.

The previous prime is 9997109. The next prime is 9997129. The reversal of 9997123 is 3217999.

9997123 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9997123 is a prime.

It is not a weakly prime, because it can be changed into another prime (9997129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4998561 + 4998562.

It is an arithmetic number, because the mean of its divisors is an integer number (4998562).

Almost surely, 2^9997123 is an apocalyptic number.

9997123 is a deficient number, since it is larger than the sum of its proper divisors (1).

9997123 is an equidigital number, since it uses as much as digits as its factorization.

9997123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30618, while the sum is 40.

The square root of 9997123 is about 3161.8227338040. The cubic root of 9997123 is about 215.4228059928.

The spelling of 9997123 in words is "nine million, nine hundred ninety-seven thousand, one hundred twenty-three".