20413131210 has 96 divisors (see below), whose sum is σ = 53681518800. Its totient is φ = 5381376000.

The previous prime is 20413131187. The next prime is 20413131217. The reversal of 20413131210 is 1213131402.

It can be written as a sum of positive squares in 8 ways, for example, as 15953963481 + 4459167729 = 126309^2 + 66777^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20413131217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8007016 + ... + 8009564.

Almost surely, 2^20413131210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20413131210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26840759400).

20413131210 is an abundant number, since it is smaller than the sum of its proper divisors (33268387590).

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

20413131210 is a wasteful number, since it uses less digits than its factorization.

20413131210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3544 (or 3541 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20413131210 its reverse (1213131402), we get a palindrome (21626262612).

The spelling of 20413131210 in words is "twenty billion, four hundred thirteen million, one hundred thirty-one thousand, two hundred ten".