997322351 has 2 divisors, whose sum is σ = 997322352. Its totient is φ = 997322350.

The previous prime is 997322321. The next prime is 997322377. The reversal of 997322351 is 153223799.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-997322351 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 997322299 and 997322308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997322311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498661175 + 498661176.

It is an arithmetic number, because the mean of its divisors is an integer number (498661176).

Almost surely, 2^997322351 is an apocalyptic number.

997322351 is a deficient number, since it is larger than the sum of its proper divisors (1).

997322351 is an equidigital number, since it uses as much as digits as its factorization.

997322351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 102060, while the sum is 41.

The square root of 997322351 is about 31580.4108744646. The cubic root of 997322351 is about 999.1066525012.

The spelling of 997322351 in words is "nine hundred ninety-seven million, three hundred twenty-two thousand, three hundred fifty-one".