210130305 has 32 divisors (see below), whose sum is σ = 419171328. Its totient is φ = 87326400.

The previous prime is 210130303. The next prime is 210130337. The reversal of 210130305 is 503031012.

It is a happy number.

It is not a de Polignac number, because 210130305 - 2¹ = 210130303 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (210130303) 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 in 31 ways as a sum of consecutive naturals, for example, 89811 + ... + 92120.

It is an arithmetic number, because the mean of its divisors is an integer number (13099104).

Almost surely, 2^210130305 is an apocalyptic number.

It is an amenable number.

210130305 is a deficient number, since it is larger than the sum of its proper divisors (209041023).

210130305 is a wasteful number, since it uses less digits than its factorization.

210130305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181957.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 210130305 is about 14495.8719986071. The cubic root of 210130305 is about 594.5151099760.

Adding to 210130305 its reverse (503031012), we get a palindrome (713161317).

The spelling of 210130305 in words is "two hundred ten million, one hundred thirty thousand, three hundred five".