997003043 has 2 divisors, whose sum is σ = 997003044. Its totient is φ = 997003042.

The previous prime is 997002943. The next prime is 997003099. The reversal of 997003043 is 340300799.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-997003043 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 997002994 and 997003012.

It is not a weakly prime, because it can be changed into another prime (997003243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498501521 + 498501522.

It is an arithmetic number, because the mean of its divisors is an integer number (498501522).

Almost surely, 2^997003043 is an apocalyptic number.

997003043 is a deficient number, since it is larger than the sum of its proper divisors (1).

997003043 is an equidigital number, since it uses as much as digits as its factorization.

997003043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 997003043 is about 31575.3549940456. The cubic root of 997003043 is about 999.0000146960. Note that the first 4 decimals are identical.

The spelling of 997003043 in words is "nine hundred ninety-seven million, three thousand, forty-three".