12531022 has 24 divisors (see below), whose sum is σ = 21918096. Its totient is φ = 5263104.

The previous prime is 12531019. The next prime is 12531041. The reversal of 12531022 is 22013521.

It is a junction number, because it is equal to n+sod(n) for n = 12530987 and 12531005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110838 + ... + 110950.

It is an arithmetic number, because the mean of its divisors is an integer number (913254).

Almost surely, 2^12531022 is an apocalyptic number.

12531022 is a deficient number, since it is larger than the sum of its proper divisors (9387074).

12531022 is an equidigital number, since it uses as much as digits as its factorization.

12531022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 12531022 is about 3539.9183606405. The cubic root of 12531022 is about 232.2712715679.

Adding to 12531022 its reverse (22013521), we get a palindrome (34544543).

The spelling of 12531022 in words is "twelve million, five hundred thirty-one thousand, twenty-two".