12631530 has 32 divisors (see below), whose sum is σ = 31363200. Its totient is φ = 3252032.

The previous prime is 12631529. The next prime is 12631573. The reversal of 12631530 is 3513621.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12631497 and 12631506.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6390 + ... + 8129.

It is an arithmetic number, because the mean of its divisors is an integer number (980100).

Almost surely, 2^12631530 is an apocalyptic number.

12631530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12631530 is an abundant number, since it is smaller than the sum of its proper divisors (18731670).

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

12631530 is a wasteful number, since it uses less digits than its factorization.

12631530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14558.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 12631530 is about 3554.0863804922. The cubic root of 12631530 is about 232.8906140444.

The spelling of 12631530 in words is "twelve million, six hundred thirty-one thousand, five hundred thirty".