423213143 has 4 divisors (see below), whose sum is σ = 423479088. Its totient is φ = 422947200.

The previous prime is 423213107. The next prime is 423213157. The reversal of 423213143 is 341312324.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 423213143 - 2¹⁶ = 423147607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423213103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130571 + ... + 133772.

It is an arithmetic number, because the mean of its divisors is an integer number (105869772).

Almost surely, 2^423213143 is an apocalyptic number.

423213143 is a deficient number, since it is larger than the sum of its proper divisors (265945).

423213143 is a wasteful number, since it uses less digits than its factorization.

423213143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265944.

The product of its digits is 1728, while the sum is 23.

The square root of 423213143 is about 20572.1448322726. The cubic root of 423213143 is about 750.7921366944.

Adding to 423213143 its reverse (341312324), we get a palindrome (764525467).

The spelling of 423213143 in words is "four hundred twenty-three million, two hundred thirteen thousand, one hundred forty-three".