197423273 has 4 divisors (see below), whose sum is σ = 197689728. Its totient is φ = 197156820.

The previous prime is 197423249. The next prime is 197423279. The reversal of 197423273 is 372324791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 372324791 = 10009 ⋅37199.

It is a cyclic number.

It is not a de Polignac number, because 197423273 - 2⁶ = 197423209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (197423279) 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 3 ways as a sum of consecutive naturals, for example, 132113 + ... + 133598.

It is an arithmetic number, because the mean of its divisors is an integer number (49422432).

Almost surely, 2^197423273 is an apocalyptic number.

It is an amenable number.

197423273 is a deficient number, since it is larger than the sum of its proper divisors (266455).

197423273 is an equidigital number, since it uses as much as digits as its factorization.

197423273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266454.

The product of its digits is 63504, while the sum is 38.

The square root of 197423273 is about 14050.7392332219. The cubic root of 197423273 is about 582.2812190228.

The spelling of 197423273 in words is "one hundred ninety-seven million, four hundred twenty-three thousand, two hundred seventy-three".