12531859 has 2 divisors, whose sum is σ = 12531860. Its totient is φ = 12531858.

The previous prime is 12531851. The next prime is 12531889. The reversal of 12531859 is 95813521.

It is a weak prime.

It is an emirp because it is prime and its reverse (95813521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12531859 - 2³ = 12531851 is a prime.

It is not a weakly prime, because it can be changed into another prime (12531851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6265929 + 6265930.

It is an arithmetic number, because the mean of its divisors is an integer number (6265930).

Almost surely, 2^12531859 is an apocalyptic number.

12531859 is a deficient number, since it is larger than the sum of its proper divisors (1).

12531859 is an equidigital number, since it uses as much as digits as its factorization.

12531859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 34.

The square root of 12531859 is about 3540.0365817319. The cubic root of 12531859 is about 232.2764429132.

The spelling of 12531859 in words is "twelve million, five hundred thirty-one thousand, eight hundred fifty-nine".