213423113 has 4 divisors (see below), whose sum is σ = 213890580. Its totient is φ = 212955648.

The previous prime is 213423109. The next prime is 213423139. The reversal of 213423113 is 311324312.

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

It can be written as a sum of positive squares in 2 ways, for example, as 161467849 + 51955264 = 12707^2 + 7208^2 .

It is a cyclic number.

It is not a de Polignac number, because 213423113 - 2² = 213423109 is a prime.

It is a super-2 number, since 2×213423113² = 91098850325221538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213423013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233048 + ... + 233961.

It is an arithmetic number, because the mean of its divisors is an integer number (53472645).

Almost surely, 2^213423113 is an apocalyptic number.

It is an amenable number.

213423113 is a deficient number, since it is larger than the sum of its proper divisors (467467).

213423113 is an equidigital number, since it uses as much as digits as its factorization.

213423113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467466.

The product of its digits is 432, while the sum is 20.

The square root of 213423113 is about 14609.0079403086. The cubic root of 213423113 is about 597.6044417487.

Adding to 213423113 its reverse (311324312), we get a palindrome (524747425).

The spelling of 213423113 in words is "two hundred thirteen million, four hundred twenty-three thousand, one hundred thirteen".