20131044210 has 80 divisors (see below), whose sum is σ = 54367018200. Its totient is φ = 5344786944.

The previous prime is 20131044209. The next prime is 20131044229. The reversal of 20131044210 is 1244013102.

20131044210 is a `hidden beast` number, since 201 + 3 + 10 + 442 + 10 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 20039516721 + 91527489 = 141561^2 + 9567^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 131226 + ... + 239754.

Almost surely, 2^20131044210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20131044210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27183509100).

20131044210 is an abundant number, since it is smaller than the sum of its proper divisors (34235973990).

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

20131044210 is a wasteful number, since it uses less digits than its factorization.

20131044210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108777 (or 108768 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 20131044210 its reverse (1244013102), we get a palindrome (21375057312).

The spelling of 20131044210 in words is "twenty billion, one hundred thirty-one million, forty-four thousand, two hundred ten".