12831900 has 36 divisors (see below), whose sum is σ = 37127832. Its totient is φ = 3421760.

The previous prime is 12831887. The next prime is 12831911. The reversal of 12831900 is 913821.

12831900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12831900² = 329315315220000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21087 + ... + 21686.

Almost surely, 2^12831900 is an apocalyptic number.

12831900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12831900 is an abundant number, since it is smaller than the sum of its proper divisors (24295932).

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

12831900 is a wasteful number, since it uses less digits than its factorization.

12831900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42790 (or 42783 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 12831900 is about 3582.1641503426. The cubic root of 12831900 is about 234.1155831940.

It can be divided in two parts, 12831 and 900, that added together give a palindrome (13731).

The spelling of 12831900 in words is "twelve million, eight hundred thirty-one thousand, nine hundred".