197231005 has 16 divisors (see below), whose sum is σ = 240814080. Its totient is φ = 155046528.

The previous prime is 197230987. The next prime is 197231009. The reversal of 197231005 is 500132791.

It is a cyclic number.

It is not a de Polignac number, because 197231005 - 2⁷ = 197230877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197231009) 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 in 15 ways as a sum of consecutive naturals, for example, 90964 + ... + 93106.

It is an arithmetic number, because the mean of its divisors is an integer number (15050880).

Almost surely, 2^197231005 is an apocalyptic number.

It is an amenable number.

197231005 is a deficient number, since it is larger than the sum of its proper divisors (43583075).

197231005 is a wasteful number, since it uses less digits than its factorization.

197231005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2460.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 197231005 is about 14043.8956490000. The cubic root of 197231005 is about 582.0921322164.

Adding to 197231005 its reverse (500132791), we get a palindrome (697363796).

The spelling of 197231005 in words is "one hundred ninety-seven million, two hundred thirty-one thousand, five".