213100546 has 4 divisors (see below), whose sum is σ = 319650822. Its totient is φ = 106550272.

The previous prime is 213100529. The next prime is 213100549. The reversal of 213100546 is 645001312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 209120521 + 3980025 = 14461^2 + 1995^2 .

It is not an unprimeable number, because it can be changed into a prime (213100549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53275135 + ... + 53275138.

Almost surely, 2^213100546 is an apocalyptic number.

213100546 is a deficient number, since it is larger than the sum of its proper divisors (106550276).

213100546 is a wasteful number, since it uses less digits than its factorization.

213100546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106550275.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 213100546 is about 14597.9637621142. The cubic root of 213100546 is about 597.3032174703.

Adding to 213100546 its reverse (645001312), we get a palindrome (858101858).

The spelling of 213100546 in words is "two hundred thirteen million, one hundred thousand, five hundred forty-six".