197321247 has 12 divisors (see below), whose sum is σ = 285341680. Its totient is φ = 131398848.

The previous prime is 197321221. The next prime is 197321303. The reversal of 197321247 is 742123791.

197321247 is a `hidden beast` number, since 1 + 97 + 321 + 247 = 666.

It is not a de Polignac number, because 197321247 - 2¹⁶ = 197255711 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 (197321447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3658 + ... + 20199.

Almost surely, 2^197321247 is an apocalyptic number.

197321247 is a deficient number, since it is larger than the sum of its proper divisors (88020433).

197321247 is a wasteful number, since it uses less digits than its factorization.

197321247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24782 (or 24779 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 197321247 is about 14047.1081365525. The cubic root of 197321247 is about 582.1808964022.

It can be divided in two parts, 1973 and 21247, that added together give a triangular number (23220 = T₂₁₅).

The spelling of 197321247 in words is "one hundred ninety-seven million, three hundred twenty-one thousand, two hundred forty-seven".