210131200 has 54 divisors (see below), whose sum is σ = 520123394. Its totient is φ = 84049920.

The previous prime is 210131189. The next prime is 210131221. The reversal of 210131200 is 2131012.

It can be written as a sum of positive squares in 3 ways, for example, as 21233664 + 188897536 = 4608^2 + 13744^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10017 + ... + 22816.

Almost surely, 2^210131200 is an apocalyptic number.

210131200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210131200 is an abundant number, since it is smaller than the sum of its proper divisors (309992194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210131200 is an equidigital number, since it uses as much as digits as its factorization.

210131200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32859 (or 32840 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 210131200 is about 14495.9028694318. The cubic root of 210131200 is about 594.5159540400.

Adding to 210131200 its reverse (2131012), we get a palindrome (212262212).

The spelling of 210131200 in words is "two hundred ten million, one hundred thirty-one thousand, two hundred".