202320197 has 2 divisors, whose sum is σ = 202320198. Its totient is φ = 202320196.

The previous prime is 202320193. The next prime is 202320253. The reversal of 202320197 is 791023202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 180660481 + 21659716 = 13441^2 + 4654^2 .

It is a cyclic number.

It is not a de Polignac number, because 202320197 - 2² = 202320193 is a prime.

It is a super-2 number, since 2×202320197² = 81866924228237618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202320193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101160098 + 101160099.

It is an arithmetic number, because the mean of its divisors is an integer number (101160099).

Almost surely, 2^202320197 is an apocalyptic number.

It is an amenable number.

202320197 is a deficient number, since it is larger than the sum of its proper divisors (1).

202320197 is an equidigital number, since it uses as much as digits as its factorization.

202320197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 202320197 is about 14223.9304343068. The cubic root of 202320197 is about 587.0562910184.

Adding to 202320197 its reverse (791023202), we get a palindrome (993343399).

The spelling of 202320197 in words is "two hundred two million, three hundred twenty thousand, one hundred ninety-seven".