423543197 has 24 divisors (see below), whose sum is σ = 537430656. Its totient is φ = 326700000.

The previous prime is 423543157. The next prime is 423543199. The reversal of 423543197 is 791345324.

It is not a de Polignac number, because 423543197 - 2¹⁰ = 423542173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 423543197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423543199) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83072 + ... + 88022.

It is an arithmetic number, because the mean of its divisors is an integer number (22392944).

Almost surely, 2^423543197 is an apocalyptic number.

It is an amenable number.

423543197 is a deficient number, since it is larger than the sum of its proper divisors (113887459).

423543197 is a wasteful number, since it uses less digits than its factorization.

423543197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5081 (or 5070 counting only the distinct ones).

The product of its digits is 90720, while the sum is 38.

The square root of 423543197 is about 20580.1651353919. The cubic root of 423543197 is about 750.9872610358.

The spelling of 423543197 in words is "four hundred twenty-three million, five hundred forty-three thousand, one hundred ninety-seven".