12131582 has 4 divisors (see below), whose sum is σ = 18197376. Its totient is φ = 6065790.

The previous prime is 12131573. The next prime is 12131621. The reversal of 12131582 is 28513121.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3032894 + ... + 3032897.

It is an arithmetic number, because the mean of its divisors is an integer number (4549344).

Almost surely, 2^12131582 is an apocalyptic number.

12131582 is a deficient number, since it is larger than the sum of its proper divisors (6065794).

12131582 is an equidigital number, since it uses as much as digits as its factorization.

12131582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6065793.

The product of its digits is 480, while the sum is 23.

The square root of 12131582 is about 3483.0420611873. The cubic root of 12131582 is about 229.7766072916.

The spelling of 12131582 in words is "twelve million, one hundred thirty-one thousand, five hundred eighty-two".