210023210 has 16 divisors (see below), whose sum is σ = 378356616. Its totient is φ = 83939328.

The previous prime is 210023201. The next prime is 210023221. The reversal of 210023210 is 12320012.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 199007449 + 11015761 = 14107^2 + 3319^2 .

It is a junction number, because it is equal to n+sod(n) for n = 210023191 and 210023200.

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, 4874 + ... + 21066.

Almost surely, 2^210023210 is an apocalyptic number.

210023210 is a deficient number, since it is larger than the sum of its proper divisors (168333406).

210023210 is a wasteful number, since it uses less digits than its factorization.

210023210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17497.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 210023210 is about 14492.1775451448. The cubic root of 210023210 is about 594.4140926329.

Adding to 210023210 its reverse (12320012), we get a palindrome (222343222).

The spelling of 210023210 in words is "two hundred ten million, twenty-three thousand, two hundred ten".