3131253500 has 48 divisors (see below), whose sum is σ = 6863132640. Its totient is φ = 1248019200.

The previous prime is 3131253497. The next prime is 3131253539. The reversal of 3131253500 is 53521313.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 130436 + ... + 152564.

It is an arithmetic number, because the mean of its divisors is an integer number (142981930).

Almost surely, 2^3131253500 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 3131253500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3431566320).

3131253500 is an abundant number, since it is smaller than the sum of its proper divisors (3731879140).

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

3131253500 is a wasteful number, since it uses less digits than its factorization.

3131253500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22431 (or 22419 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 3131253500 is about 55957.6044876834. The cubic root of 3131253500 is about 1462.9834377150.

Adding to 3131253500 its reverse (53521313), we get a palindrome (3184774813).

The spelling of 3131253500 in words is "three billion, one hundred thirty-one million, two hundred fifty-three thousand, five hundred".