197731020 has 48 divisors (see below), whose sum is σ = 571511808. Its totient is φ = 51026880.

The previous prime is 197731013. The next prime is 197731099. The reversal of 197731020 is 20137791.

197731020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

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, 51294 + ... + 55013.

It is an arithmetic number, because the mean of its divisors is an integer number (11906496).

Almost surely, 2^197731020 is an apocalyptic number.

197731020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197731020 is an abundant number, since it is smaller than the sum of its proper divisors (373780788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197731020 is a wasteful number, since it uses less digits than its factorization.

197731020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106350 (or 106348 counting only the distinct ones).

The product of its (nonzero) digits is 2646, while the sum is 30.

The square root of 197731020 is about 14061.6862431218. The cubic root of 197731020 is about 582.5836188111.

The spelling of 197731020 in words is "one hundred ninety-seven million, seven hundred thirty-one thousand, twenty".