204340197 has 4 divisors (see below), whose sum is σ = 272453600. Its totient is φ = 136226796.

The previous prime is 204340139. The next prime is 204340247. The reversal of 204340197 is 791043402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 204340197 - 2⁶ = 204340133 is a prime.

It is a super-2 number, since 2×204340197² = 83509832219997618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204341197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34056697 + ... + 34056702.

It is an arithmetic number, because the mean of its divisors is an integer number (68113400).

Almost surely, 2^204340197 is an apocalyptic number.

It is an amenable number.

204340197 is a deficient number, since it is larger than the sum of its proper divisors (68113403).

204340197 is an equidigital number, since it uses as much as digits as its factorization.

204340197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68113402.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 204340197 is about 14294.7611732411. The cubic root of 204340197 is about 589.0035819657.

Adding to 204340197 its reverse (791043402), we get a palindrome (995383599).

The spelling of 204340197 in words is "two hundred four million, three hundred forty thousand, one hundred ninety-seven".