12531959 has 4 divisors (see below), whose sum is σ = 13671240. Its totient is φ = 11392680.

The previous prime is 12531919. The next prime is 12531977. The reversal of 12531959 is 95913521.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12531959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12531919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 569624 + ... + 569645.

It is an arithmetic number, because the mean of its divisors is an integer number (3417810).

Almost surely, 2^12531959 is an apocalyptic number.

12531959 is a deficient number, since it is larger than the sum of its proper divisors (1139281).

12531959 is a wasteful number, since it uses less digits than its factorization.

12531959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139280.

The product of its digits is 12150, while the sum is 35.

The square root of 12531959 is about 3540.0507058515. The cubic root of 12531959 is about 232.2770607407.

The spelling of 12531959 in words is "twelve million, five hundred thirty-one thousand, nine hundred fifty-nine".