197631143 has 8 divisors (see below), whose sum is σ = 205705200. Its totient is φ = 189641088.

The previous prime is 197631059. The next prime is 197631151. The reversal of 197631143 is 341136791.

It is a happy number.

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 197631143 - 2⁸ = 197630887 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 (197631943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16178 + ... + 25631.

It is an arithmetic number, because the mean of its divisors is an integer number (25713150).

Almost surely, 2^197631143 is an apocalyptic number.

197631143 is a deficient number, since it is larger than the sum of its proper divisors (8074057).

197631143 is a wasteful number, since it uses less digits than its factorization.

197631143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42001.

The product of its digits is 13608, while the sum is 35.

The square root of 197631143 is about 14058.1344068123. The cubic root of 197631143 is about 582.4855116218.

The spelling of 197631143 in words is "one hundred ninety-seven million, six hundred thirty-one thousand, one hundred forty-three".