100197 has 10 divisors (see below), whose sum is σ = 149798.
Its totient is φ = 66744.
The previous prime is 100193. The next prime is 100207. The reversal of 100197 is 791001.
Adding to 100197 its reverse (791001), we get a palindrome (891198).
It can be written as a sum of positive squares in only one way, i.e., 93636 + 6561 = 306^2 + 81^2
It is not a de Polignac number, because 100197 - 22 = 100193 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (100193) by changing a digit.
It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 538 + ... + 699.
2100197 is an apocalyptic number.
It is an amenable number.
100197 is a deficient number, since it is larger than the sum of its proper divisors (49601).
100197 is an equidigital number, since it uses as much as digits as its factorization.
100197 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1249 (or 1240 counting only the distinct ones).
The product of its (nonzero) digits is 63, while the sum is 18.
The square root of 100197 is about 316.5390971112.
The cubic root of 100197 is about 46.4463481096.
The spelling of 100197 in words is "one hundred thousand, one hundred ninety-seven".