12811300 has 18 divisors (see below), whose sum is σ = 27800738. Its totient is φ = 5124480.

The previous prime is 12811297. The next prime is 12811303. The reversal of 12811300 is 311821.

It is an interprime number because it is at equal distance from previous prime (12811297) and next prime (12811303).

It can be written as a sum of positive squares in 3 ways, for example, as 9216 + 12802084 = 96^2 + 3578^2 .

It is not an unprimeable number, because it can be changed into a prime (12811303) 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 5 ways as a sum of consecutive naturals, for example, 63957 + ... + 64156.

Almost surely, 2^12811300 is an apocalyptic number.

12811300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12811300 is an abundant number, since it is smaller than the sum of its proper divisors (14989438).

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

12811300 is a wasteful number, since it uses less digits than its factorization.

12811300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128127 (or 128120 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 12811300 is about 3579.2876386231. The cubic root of 12811300 is about 233.9902350614.

The spelling of 12811300 in words is "twelve million, eight hundred eleven thousand, three hundred".