197312900 has 18 divisors (see below), whose sum is σ = 428169210. Its totient is φ = 78925120.

The previous prime is 197312881. The next prime is 197312963. The reversal of 197312900 is 9213791.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 24285184 + 173027716 = 4928^2 + 13154^2 .

It is a congruent number.

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 986465 + ... + 986664.

Almost surely, 2^197312900 is an apocalyptic number.

197312900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197312900 is an abundant number, since it is smaller than the sum of its proper divisors (230856310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197312900 is a wasteful number, since it uses less digits than its factorization.

197312900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1973143 (or 1973136 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 197312900 is about 14046.8110259945. The cubic root of 197312900 is about 582.1726872297.

The spelling of 197312900 in words is "one hundred ninety-seven million, three hundred twelve thousand, nine hundred".