12031870 has 16 divisors (see below), whose sum is σ = 22025520. Its totient is φ = 4730944.

The previous prime is 12031867. The next prime is 12031891. The reversal of 12031870 is 7813021.

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, 9607 + ... + 10786.

It is an arithmetic number, because the mean of its divisors is an integer number (1376595).

Almost surely, 2^12031870 is an apocalyptic number.

12031870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12031870 is a deficient number, since it is larger than the sum of its proper divisors (9993650).

12031870 is a wasteful number, since it uses less digits than its factorization.

12031870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20459.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 12031870 is about 3468.6986032228. The cubic root of 12031870 is about 229.1453473648.

Adding to 12031870 its reverse (7813021), we get a palindrome (19844891).

The spelling of 12031870 in words is "twelve million, thirty-one thousand, eight hundred seventy".