213423134 has 8 divisors (see below), whose sum is σ = 338966208. Its totient is φ = 100434400.

The previous prime is 213423109. The next prime is 213423139. The reversal of 213423134 is 431324312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213423139) 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, 3138542 + ... + 3138609.

It is an arithmetic number, because the mean of its divisors is an integer number (42370776).

Almost surely, 2^213423134 is an apocalyptic number.

213423134 is a deficient number, since it is larger than the sum of its proper divisors (125543074).

213423134 is a wasteful number, since it uses less digits than its factorization.

213423134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6277170.

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

The square root of 213423134 is about 14609.0086590432. The cubic root of 213423134 is about 597.6044613493.

Adding to 213423134 its reverse (431324312), we get a palindrome (644747446).

The spelling of 213423134 in words is "two hundred thirteen million, four hundred twenty-three thousand, one hundred thirty-four".