197831243 has 8 divisors (see below), whose sum is σ = 211255680. Its totient is φ = 184847040.

The previous prime is 197831239. The next prime is 197831251. The reversal of 197831243 is 342138791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 197831243 - 2² = 197831239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 197831197 and 197831206.

It is not an unprimeable number, because it can be changed into a prime (197831203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109130 + ... + 110927.

It is an arithmetic number, because the mean of its divisors is an integer number (26406960).

Almost surely, 2^197831243 is an apocalyptic number.

197831243 is a deficient number, since it is larger than the sum of its proper divisors (13424437).

197831243 is a wasteful number, since it uses less digits than its factorization.

197831243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220117.

The product of its digits is 36288, while the sum is 38.

The square root of 197831243 is about 14065.2494823234. The cubic root of 197831243 is about 582.6820326662.

The spelling of 197831243 in words is "one hundred ninety-seven million, eight hundred thirty-one thousand, two hundred forty-three".