12587311 has 4 divisors (see below), whose sum is σ = 13731624. Its totient is φ = 11443000.

The previous prime is 12587303. The next prime is 12587381. The reversal of 12587311 is 11378521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12587311 - 2³ = 12587303 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12587311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12587381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 572140 + ... + 572161.

It is an arithmetic number, because the mean of its divisors is an integer number (3432906).

Almost surely, 2^12587311 is an apocalyptic number.

12587311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12587311 is a deficient number, since it is larger than the sum of its proper divisors (1144313).

12587311 is a wasteful number, since it uses less digits than its factorization.

12587311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144312.

The product of its digits is 1680, while the sum is 28.

The square root of 12587311 is about 3547.8600592470. The cubic root of 12587311 is about 232.6185374659.

The spelling of 12587311 in words is "twelve million, five hundred eighty-seven thousand, three hundred eleven".