210321130 has 16 divisors (see below), whose sum is σ = 379023624. Its totient is φ = 84029440.

The previous prime is 210321113. The next prime is 210321149. The reversal of 210321130 is 31123012.

It can be written as a sum of positive squares in 4 ways, for example, as 90878089 + 119443041 = 9533^2 + 10929^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 210321130.

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, 3127 + ... + 20746.

Almost surely, 2^210321130 is an apocalyptic number.

210321130 is a deficient number, since it is larger than the sum of its proper divisors (168702494).

210321130 is a wasteful number, since it uses less digits than its factorization.

210321130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24761.

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

The square root of 210321130 is about 14502.4525512066. The cubic root of 210321130 is about 594.6950205976.

Adding to 210321130 its reverse (31123012), we get a palindrome (241444142).

The spelling of 210321130 in words is "two hundred ten million, three hundred twenty-one thousand, one hundred thirty".