12531747 has 8 divisors (see below), whose sum is σ = 16958656.
Its totient is φ = 8229672.
The previous prime is 12531709. The next prime is 12531763. The reversal of 12531747 is 74713521.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 12531747 - 212 = 12527651 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (12531767) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30973 + ... + 31374.
It is an arithmetic number, because the mean of its divisors is an integer number (2119832).
Almost surely, 212531747 is an apocalyptic number.
12531747 is a deficient number, since it is larger than the sum of its proper divisors (4426909).
12531747 is an equidigital number, since it uses as much as digits as its factorization.
12531747 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 62417.
The product of its digits is 5880, while the sum is 30.
The square root of 12531747 is about 3540.0207626510.
The cubic root of 12531747 is about 232.2757509424.
The spelling of 12531747 in words is "twelve million, five hundred thirty-one thousand, seven hundred forty-seven".