202023197 has 2 divisors, whose sum is σ = 202023198. Its totient is φ = 202023196.

The previous prime is 202023179. The next prime is 202023209. The reversal of 202023197 is 791320202.

Together with previous prime (202023179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137686756 + 64336441 = 11734^2 + 8021^2 .

It is a cyclic number.

It is not a de Polignac number, because 202023197 - 2⁸ = 202022941 is a prime.

It is a super-2 number, since 2×202023197² = 81626744252201618, 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 (202013197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101011598 + 101011599.

It is an arithmetic number, because the mean of its divisors is an integer number (101011599).

Almost surely, 2^202023197 is an apocalyptic number.

It is an amenable number.

202023197 is a deficient number, since it is larger than the sum of its proper divisors (1).

202023197 is an equidigital number, since it uses as much as digits as its factorization.

202023197 is an odious number, because the sum of its binary digits is odd.

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

The square root of 202023197 is about 14213.4864477369. The cubic root of 202023197 is about 586.7688899796.

Adding to 202023197 its reverse (791320202), we get a palindrome (993343399).

The spelling of 202023197 in words is "two hundred two million, twenty-three thousand, one hundred ninety-seven".