3031222500 has 150 divisors (see below), whose sum is σ = 9902759790. Its totient is φ = 808272000.

The previous prime is 3031222489. The next prime is 3031222507. The reversal of 3031222500 is 52221303.

It can be written as a sum of positive squares in 5 ways, for example, as 2285604864 + 745617636 = 47808^2 + 27306^2 .

It is a tau number, because it is divible by the number of its divisors (150).

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 (3031222507) by changing a digit.

It is a polite number, since it can be written in 49 ways as a sum of consecutive naturals, for example, 195016 + ... + 209984.

Almost surely, 2^3031222500 is an apocalyptic number.

3031222500 is a gapful number since it is divisible by the number (30) 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 3031222500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4951379895).

3031222500 is an abundant number, since it is smaller than the sum of its proper divisors (6871537290).

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

3031222500 is a wasteful number, since it uses less digits than its factorization.

3031222500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15005 (or 14979 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 3031222500 is about 55056.5391211616. The cubic root of 3031222500 is about 1447.2357164688.

Adding to 3031222500 its reverse (52221303), we get a palindrome (3083443803).

The spelling of 3031222500 in words is "three billion, thirty-one million, two hundred twenty-two thousand, five hundred".