12831500 has 48 divisors (see below), whose sum is σ = 30584736. Its totient is φ = 4664000.

The previous prime is 12831499. The next prime is 12831509. The reversal of 12831500 is 513821.

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (12831509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4334 + ... + 6666.

It is an arithmetic number, because the mean of its divisors is an integer number (637182).

Almost surely, 2^12831500 is an apocalyptic number.

12831500 is a gapful number since it is divisible by the number (10) 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 12831500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15292368).

12831500 is an abundant number, since it is smaller than the sum of its proper divisors (17753236).

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

12831500 is a wasteful number, since it uses less digits than its factorization.

12831500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2363 (or 2351 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 12831500 is about 3582.1083177369. The cubic root of 12831500 is about 234.1131505273.

It can be divided in two parts, 12831 and 500, that added together give a palindrome (13331).

The spelling of 12831500 in words is "twelve million, eight hundred thirty-one thousand, five hundred".