997003243 has 2 divisors, whose sum is σ = 997003244. Its totient is φ = 997003242.

The previous prime is 997003201. The next prime is 997003261. The reversal of 997003243 is 342300799.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 997003243 - 2⁹ = 997002731 is a prime.

It is not a weakly prime, because it can be changed into another prime (997003043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498501621 + 498501622.

It is an arithmetic number, because the mean of its divisors is an integer number (498501622).

Almost surely, 2^997003243 is an apocalyptic number.

997003243 is a deficient number, since it is larger than the sum of its proper divisors (1).

997003243 is an equidigital number, since it uses as much as digits as its factorization.

997003243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 37.

The square root of 997003243 is about 31575.3581610724. The cubic root of 997003243 is about 999.0000814962. Note that the first 4 decimals are identical.

The spelling of 997003243 in words is "nine hundred ninety-seven million, three thousand, two hundred forty-three".