997163351 has 2 divisors, whose sum is σ = 997163352. Its totient is φ = 997163350.

The previous prime is 997163333. The next prime is 997163353. The reversal of 997163351 is 153361799.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-997163351 is a prime.

It is a super-3 number, since 3×997163351³ (a number of 28 digits) contains 333 as substring.

Together with 997163353, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997163353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498581675 + 498581676.

It is an arithmetic number, because the mean of its divisors is an integer number (498581676).

Almost surely, 2^997163351 is an apocalyptic number.

997163351 is a deficient number, since it is larger than the sum of its proper divisors (1).

997163351 is an equidigital number, since it uses as much as digits as its factorization.

997163351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 153090, while the sum is 44.

The square root of 997163351 is about 31577.8933907884. The cubic root of 997163351 is about 999.0535548575.

The spelling of 997163351 in words is "nine hundred ninety-seven million, one hundred sixty-three thousand, three hundred fifty-one".