210231131210172 has 36 divisors (see below), whose sum is σ = 540129345309736. Its totient is φ = 68928239740320.

The previous prime is 210231131210171. The next prime is 210231131210189. The reversal of 210231131210172 is 271012131132012.

210231131210172 is a `hidden beast` number, since 2 + 10 + 2 + 311 + 312 + 10 + 17 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210231131210171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47866830958 + ... + 47866835349.

Almost surely, 2^{210231131210172} is an apocalyptic number.

It is an amenable number.

210231131210172 is an abundant number, since it is smaller than the sum of its proper divisors (329898214099564).

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

210231131210172 is a wasteful number, since it uses less digits than its factorization.

210231131210172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95733666378 (or 95733666373 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

Adding to 210231131210172 its reverse (271012131132012), we get a palindrome (481243262342184).

The spelling of 210231131210172 in words is "two hundred ten trillion, two hundred thirty-one billion, one hundred thirty-one million, two hundred ten thousand, one hundred seventy-two".