197223581 has 8 divisors (see below), whose sum is σ = 203884800. Its totient is φ = 190581120.

The previous prime is 197223541. The next prime is 197223583. The reversal of 197223581 is 185322791.

197223581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 197223581 - 2¹⁸ = 196961437 is a prime.

It is a super-2 number, since 2×197223581² = 77794281804927122, which 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 (197223583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18605 + ... + 27213.

It is an arithmetic number, because the mean of its divisors is an integer number (25485600).

Almost surely, 2^197223581 is an apocalyptic number.

It is an amenable number.

197223581 is a deficient number, since it is larger than the sum of its proper divisors (6661219).

197223581 is an equidigital number, since it uses as much as digits as its factorization.

197223581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9379.

The product of its digits is 30240, while the sum is 38.

The square root of 197223581 is about 14043.6313323869. The cubic root of 197223581 is about 582.0848285875.

The spelling of 197223581 in words is "one hundred ninety-seven million, two hundred twenty-three thousand, five hundred eighty-one".