213443434 has 8 divisors (see below), whose sum is σ = 320735520. Its totient is φ = 106531596.

The previous prime is 213443431. The next prime is 213443437. The reversal of 213443434 is 434344312.

It is an interprime number because it is at equal distance from previous prime (213443431) and next prime (213443437).

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

It is not an unprimeable number, because it can be changed into a prime (213443431) 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, 93654 + ... + 95905.

It is an arithmetic number, because the mean of its divisors is an integer number (40091940).

Almost surely, 2^213443434 is an apocalyptic number.

213443434 is a deficient number, since it is larger than the sum of its proper divisors (107292086).

213443434 is a wasteful number, since it uses less digits than its factorization.

213443434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190124.

The product of its digits is 13824, while the sum is 28.

The square root of 213443434 is about 14609.7034193032. The cubic root of 213443434 is about 597.6234080395.

Adding to 213443434 its reverse (434344312), we get a palindrome (647787746).

The spelling of 213443434 in words is "two hundred thirteen million, four hundred forty-three thousand, four hundred thirty-four".