5031721080 has 128 divisors (see below), whose sum is σ = 16787995200. Its totient is φ = 1340545536.

The previous prime is 5031721069. The next prime is 5031721087. The reversal of 5031721080 is 801271305.

5031721080 is a `hidden beast` number, since 503 + 1 + 72 + 10 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5031721087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2155594 + ... + 2157926.

Almost surely, 2^5031721080 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 5031721080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8393997600).

5031721080 is an abundant number, since it is smaller than the sum of its proper divisors (11756274120).

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

5031721080 is a wasteful number, since it uses less digits than its factorization.

5031721080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4350 (or 4340 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 5031721080 is about 70934.6253955006. The cubic root of 5031721080 is about 1713.5844785528.

Adding to 5031721080 its reverse (801271305), we get a palindrome (5832992385).

The spelling of 5031721080 in words is "five billion, thirty-one million, seven hundred twenty-one thousand, eighty".