2131804360 has 64 divisors (see below), whose sum is σ = 5502816000. Its totient is φ = 728100096.

The previous prime is 2131804357. The next prime is 2131804361. The reversal of 2131804360 is 634081312.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (2131804361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59166 + ... + 88114.

It is an arithmetic number, because the mean of its divisors is an integer number (85981500).

Almost surely, 2^2131804360 is an apocalyptic number.

2131804360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2131804360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2751408000).

2131804360 is an abundant number, since it is smaller than the sum of its proper divisors (3371011640).

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

2131804360 is a wasteful number, since it uses less digits than its factorization.

2131804360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29230 (or 29226 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 2131804360 is about 46171.4669465894. The cubic root of 2131804360 is about 1287.0115627383.

Adding to 2131804360 its reverse (634081312), we get a palindrome (2765885672).

The spelling of 2131804360 in words is "two billion, one hundred thirty-one million, eight hundred four thousand, three hundred sixty".