197331143 has 2 divisors, whose sum is σ = 197331144. Its totient is φ = 197331142.

The previous prime is 197331119. The next prime is 197331149. The reversal of 197331143 is 341133791.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (341133791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 197331143 - 2¹² = 197327047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197331149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98665571 + 98665572.

It is an arithmetic number, because the mean of its divisors is an integer number (98665572).

Almost surely, 2^197331143 is an apocalyptic number.

197331143 is a deficient number, since it is larger than the sum of its proper divisors (1).

197331143 is an equidigital number, since it uses as much as digits as its factorization.

197331143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 32.

The square root of 197331143 is about 14047.4603754558. The cubic root of 197331143 is about 582.1906286974.

The spelling of 197331143 in words is "one hundred ninety-seven million, three hundred thirty-one thousand, one hundred forty-three".