210131451252 has 72 divisors (see below), whose sum is σ = 538204867200. Its totient is φ = 69116606208.

The previous prime is 210131451247. The next prime is 210131451287. The reversal of 210131451252 is 252154131012.

It is a happy number.

210131451252 is a `hidden beast` number, since 2 + 10 + 131 + 4 + 512 + 5 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5032999 + ... + 5074577.

It is an arithmetic number, because the mean of its divisors is an integer number (7475067600).

Almost surely, 2^210131451252 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210131451252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269102433600).

210131451252 is an abundant number, since it is smaller than the sum of its proper divisors (328073415948).

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

210131451252 is a wasteful number, since it uses less digits than its factorization.

210131451252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43445 (or 43440 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 210131451252 its reverse (252154131012), we get a palindrome (462285582264).

The spelling of 210131451252 in words is "two hundred ten billion, one hundred thirty-one million, four hundred fifty-one thousand, two hundred fifty-two".