12587031 has 6 divisors (see below), whose sum is σ = 18181280. Its totient is φ = 8391348.

The previous prime is 12587027. The next prime is 12587039. The reversal of 12587031 is 13078521.

It is not a de Polignac number, because 12587031 - 2² = 12587027 is a prime.

It is a super-2 number, since 2×12587031² = 316866698789922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12586986 and 12587004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12587039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 699271 + ... + 699288.

Almost surely, 2^12587031 is an apocalyptic number.

12587031 is a deficient number, since it is larger than the sum of its proper divisors (5594249).

12587031 is a wasteful number, since it uses less digits than its factorization.

12587031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1398565 (or 1398562 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 12587031 is about 3547.8205986211. The cubic root of 12587031 is about 232.6168126158.

The spelling of 12587031 in words is "twelve million, five hundred eighty-seven thousand, thirty-one".