12531822 has 16 divisors (see below), whose sum is σ = 26538192. Its totient is φ = 3931520.

The previous prime is 12531809. The next prime is 12531829. The reversal of 12531822 is 22813521.

It is a junction number, because it is equal to n+sod(n) for n = 12531792 and 12531801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12531829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61329 + ... + 61532.

It is an arithmetic number, because the mean of its divisors is an integer number (1658637).

Almost surely, 2^12531822 is an apocalyptic number.

12531822 is an abundant number, since it is smaller than the sum of its proper divisors (14006370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12531822 is a wasteful number, since it uses less digits than its factorization.

12531822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122883.

The product of its digits is 960, while the sum is 24.

The square root of 12531822 is about 3540.0313557933. The cubic root of 12531822 is about 232.2762143162.

The spelling of 12531822 in words is "twelve million, five hundred thirty-one thousand, eight hundred twenty-two".