997032317 has 2 divisors, whose sum is σ = 997032318. Its totient is φ = 997032316.

The previous prime is 997032299. The next prime is 997032341. The reversal of 997032317 is 713230799.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 974126521 + 22905796 = 31211^2 + 4786^2 .

It is a cyclic number.

It is not a de Polignac number, because 997032317 - 2²⁰ = 995983741 is a prime.

It is a super-2 number, since 2×997032317² = 1988146882284776978, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997032347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498516158 + 498516159.

It is an arithmetic number, because the mean of its divisors is an integer number (498516159).

Almost surely, 2^997032317 is an apocalyptic number.

It is an amenable number.

997032317 is a deficient number, since it is larger than the sum of its proper divisors (1).

997032317 is an equidigital number, since it uses as much as digits as its factorization.

997032317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 71442, while the sum is 41.

The square root of 997032317 is about 31575.8185483765. The cubic root of 997032317 is about 999.0097921454.

The spelling of 997032317 in words is "nine hundred ninety-seven million, thirty-two thousand, three hundred seventeen".