12731583 has 4 divisors (see below), whose sum is σ = 16975448. Its totient is φ = 8487720.

The previous prime is 12731573. The next prime is 12731591. The reversal of 12731583 is 38513721.

12731583 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12731583 - 2¹³ = 12723391 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 12731583.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12731503) 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, 2121928 + ... + 2121933.

It is an arithmetic number, because the mean of its divisors is an integer number (4243862).

Almost surely, 2^12731583 is an apocalyptic number.

12731583 is a deficient number, since it is larger than the sum of its proper divisors (4243865).

12731583 is an equidigital number, since it uses as much as digits as its factorization.

12731583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4243864.

The product of its digits is 5040, while the sum is 30.

The square root of 12731583 is about 3568.1343864827. The cubic root of 12731583 is about 233.5038981905.

The spelling of 12731583 in words is "twelve million, seven hundred thirty-one thousand, five hundred eighty-three".