213044135 has 8 divisors (see below), whose sum is σ = 255848976. Its totient is φ = 170304640.

The previous prime is 213044129. The next prime is 213044171. The reversal of 213044135 is 531440312.

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

It is not a de Polignac number, because 213044135 - 2²² = 208849831 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213044135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8849 + ... + 22458.

It is an arithmetic number, because the mean of its divisors is an integer number (31981122).

Almost surely, 2^213044135 is an apocalyptic number.

213044135 is a deficient number, since it is larger than the sum of its proper divisors (42804841).

213044135 is a wasteful number, since it uses less digits than its factorization.

213044135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32673.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 213044135 is about 14596.0314811938. The cubic root of 213044135 is about 597.2505076954.

Adding to 213044135 its reverse (531440312), we get a palindrome (744484447).

The spelling of 213044135 in words is "two hundred thirteen million, forty-four thousand, one hundred thirty-five".