213034423 has 4 divisors (see below), whose sum is σ = 243467920. Its totient is φ = 182600928.

The previous prime is 213034417. The next prime is 213034447. The reversal of 213034423 is 324430312.

It is a happy number.

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 213034423 - 2⁵ = 213034391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213034394 and 213034403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213034453) 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, 15216738 + ... + 15216751.

It is an arithmetic number, because the mean of its divisors is an integer number (60866980).

Almost surely, 2^213034423 is an apocalyptic number.

213034423 is a deficient number, since it is larger than the sum of its proper divisors (30433497).

213034423 is an equidigital number, since it uses as much as digits as its factorization.

213034423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30433496.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 213034423 is about 14595.6987842309. The cubic root of 213034423 is about 597.2414319781.

Adding to 213034423 its reverse (324430312), we get a palindrome (537464735).

The spelling of 213034423 in words is "two hundred thirteen million, thirty-four thousand, four hundred twenty-three".