213103210 has 8 divisors (see below), whose sum is σ = 383585796. Its totient is φ = 85241280.

The previous prime is 213103201. The next prime is 213103237. The reversal of 213103210 is 12301312.

It can be written as a sum of positive squares in 2 ways, for example, as 208311489 + 4791721 = 14433^2 + 2189^2 .

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

It is a super-2 number, since 2×213103210² = 90825956224608200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10655151 + ... + 10655170.

Almost surely, 2^213103210 is an apocalyptic number.

213103210 is a deficient number, since it is larger than the sum of its proper divisors (170482586).

213103210 is a wasteful number, since it uses less digits than its factorization.

213103210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21310328.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 213103210 is about 14598.0550074316. The cubic root of 213103210 is about 597.3057064505.

Adding to 213103210 its reverse (12301312), we get a palindrome (225404522).

The spelling of 213103210 in words is "two hundred thirteen million, one hundred three thousand, two hundred ten".