197191343 has 4 divisors (see below), whose sum is σ = 197219568. Its totient is φ = 197163120.

The previous prime is 197191339. The next prime is 197191363. The reversal of 197191343 is 343191791.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 197191343 - 2² = 197191339 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 197191297 and 197191306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197191333) 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, 4958 + ... + 20468.

It is an arithmetic number, because the mean of its divisors is an integer number (49304892).

Almost surely, 2^197191343 is an apocalyptic number.

197191343 is a deficient number, since it is larger than the sum of its proper divisors (28225).

197191343 is a wasteful number, since it uses less digits than its factorization.

197191343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28224.

The product of its digits is 20412, while the sum is 38.

The square root of 197191343 is about 14042.4835054203. The cubic root of 197191343 is about 582.0531111610.

The spelling of 197191343 in words is "one hundred ninety-seven million, one hundred ninety-one thousand, three hundred forty-three".