12311870 has 16 divisors (see below), whose sum is σ = 22312800. Its totient is φ = 4891104.

The previous prime is 12311869. The next prime is 12311881. The reversal of 12311870 is 7811321.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2642 + ... + 5621.

It is an arithmetic number, because the mean of its divisors is an integer number (1394550).

Almost surely, 2^12311870 is an apocalyptic number.

12311870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12311870 is a deficient number, since it is larger than the sum of its proper divisors (10000930).

12311870 is a wasteful number, since it uses less digits than its factorization.

12311870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8419.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 12311870 is about 3508.8274394732. The cubic root of 12311870 is about 230.9092551623.

The spelling of 12311870 in words is "twelve million, three hundred eleven thousand, eight hundred seventy".