213034305 has 16 divisors (see below), whose sum is σ = 371841984. Its totient is φ = 103289280.

The previous prime is 213034301. The next prime is 213034313. The reversal of 213034305 is 503430312.

It is not a de Polignac number, because 213034305 - 2² = 213034301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213034301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 645394 + ... + 645723.

It is an arithmetic number, because the mean of its divisors is an integer number (23240124).

Almost surely, 2^213034305 is an apocalyptic number.

It is an amenable number.

213034305 is a deficient number, since it is larger than the sum of its proper divisors (158807679).

213034305 is a wasteful number, since it uses less digits than its factorization.

213034305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291136.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 213034305 is about 14595.6947419436. The cubic root of 213034305 is about 597.2413217072.

Adding to 213034305 its reverse (503430312), we get a palindrome (716464617).

The spelling of 213034305 in words is "two hundred thirteen million, thirty-four thousand, three hundred five".