12987107 has 12 divisors (see below), whose sum is σ = 15324336. Its totient is φ = 10972080.

The previous prime is 12987103. The next prime is 12987137. The reversal of 12987107 is 70178921.

12987107 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12987107 - 2² = 12987103 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12987103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1613 + ... + 5345.

It is an arithmetic number, because the mean of its divisors is an integer number (1277028).

Almost surely, 2^12987107 is an apocalyptic number.

12987107 is a deficient number, since it is larger than the sum of its proper divisors (2337229).

12987107 is an equidigital number, since it uses as much as digits as its factorization.

12987107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3818 (or 3811 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 35.

The square root of 12987107 is about 3603.7628945312. The cubic root of 12987107 is about 235.0557103471.

The spelling of 12987107 in words is "twelve million, nine hundred eighty-seven thousand, one hundred seven".