2031322500 has 90 divisors (see below), whose sum is σ = 6416432022. Its totient is φ = 541680000.

The previous prime is 2031322481. The next prime is 2031322507. The reversal of 2031322500 is 52231302.

It can be written as a sum of positive squares in 5 ways, for example, as 753831936 + 1277490564 = 27456^2 + 35742^2 .

It is a tau number, because it is divible by the number of its divisors (90).

It is a super-3 number, since 3×2031322500³ (a number of 29 digits) contains 333 as substring.

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 (2031322507) 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 29 ways as a sum of consecutive naturals, for example, 22641 + ... + 67640.

Almost surely, 2^2031322500 is an apocalyptic number.

2031322500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2031322500 is an abundant number, since it is smaller than the sum of its proper divisors (4385109522).

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

2031322500 is a wasteful number, since it uses less digits than its factorization.

2031322500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90311 (or 90291 counting only the distinct ones).

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

The square root of 2031322500 is about 45070.1952514076. The cubic root of 2031322500 is about 1266.4643220948.

Adding to 2031322500 its reverse (52231302), we get a palindrome (2083553802).

The spelling of 2031322500 in words is "two billion, thirty-one million, three hundred twenty-two thousand, five hundred".