213543604 has 6 divisors (see below), whose sum is σ = 373701314. Its totient is φ = 106771800.

The previous prime is 213543587. The next prime is 213543623. The reversal of 213543604 is 406345312.

It can be written as a sum of positive squares in only one way, i.e., 153512100 + 60031504 = 12390^2 + 7748^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26692947 + ... + 26692954.

Almost surely, 2^213543604 is an apocalyptic number.

It is an amenable number.

213543604 is a deficient number, since it is larger than the sum of its proper divisors (160157710).

213543604 is a wasteful number, since it uses less digits than its factorization.

213543604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53385905 (or 53385903 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 213543604 is about 14613.1312181887. The cubic root of 213543604 is about 597.7168825701.

Adding to 213543604 its reverse (406345312), we get a palindrome (619888916).

The spelling of 213543604 in words is "two hundred thirteen million, five hundred forty-three thousand, six hundred four".