12031887 has 16 divisors (see below), whose sum is σ = 18420480. Its totient is φ = 6843072.

The previous prime is 12031867. The next prime is 12031891. The reversal of 12031887 is 78813021.

It is a happy number.

It is not a de Polignac number, because 12031887 - 2¹⁸ = 11769743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3664 + ... + 6122.

It is an arithmetic number, because the mean of its divisors is an integer number (1151280).

Almost surely, 2^12031887 is an apocalyptic number.

12031887 is a deficient number, since it is larger than the sum of its proper divisors (6388593).

12031887 is a wasteful number, since it uses less digits than its factorization.

12031887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2702.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 12031887 is about 3468.7010537087. The cubic root of 12031887 is about 229.1454552856.

The spelling of 12031887 in words is "twelve million, thirty-one thousand, eight hundred eighty-seven".