197231090 has 64 divisors (see below), whose sum is σ = 419724288. Its totient is φ = 65318400.

The previous prime is 197231071. The next prime is 197231101. The reversal of 197231090 is 90132791.

It is a happy number.

It is a Curzon number.

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 31 ways as a sum of consecutive naturals, for example, 701750 + ... + 702030.

It is an arithmetic number, because the mean of its divisors is an integer number (6558192).

Almost surely, 2^197231090 is an apocalyptic number.

197231090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

197231090 is an abundant number, since it is smaller than the sum of its proper divisors (222493198).

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

197231090 is a wasteful number, since it uses less digits than its factorization.

197231090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 197231090 is about 14043.8986752255. The cubic root of 197231090 is about 582.0922158371.

The spelling of 197231090 in words is "one hundred ninety-seven million, two hundred thirty-one thousand, ninety".