197143317271 has 4 divisors (see below), whose sum is σ = 205714765872. Its totient is φ = 188571868672.

The previous prime is 197143317233. The next prime is 197143317299. The reversal of 197143317271 is 172713341791.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 197143317271 - 2⁷ = 197143317143 is a prime.

It is a super-2 number, since 2×197143317271² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197143317571) 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, 4285724266 + ... + 4285724311.

It is an arithmetic number, because the mean of its divisors is an integer number (51428691468).

Almost surely, 2^197143317271 is an apocalyptic number.

197143317271 is a deficient number, since it is larger than the sum of its proper divisors (8571448601).

197143317271 is an equidigital number, since it uses as much as digits as its factorization.

197143317271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8571448600.

The product of its digits is 222264, while the sum is 46.

The spelling of 197143317271 in words is "one hundred ninety-seven billion, one hundred forty-three million, three hundred seventeen thousand, two hundred seventy-one".