12531020 has 24 divisors (see below), whose sum is σ = 26394144. Its totient is φ = 4997376.

The previous prime is 12531019. The next prime is 12531041. The reversal of 12531020 is 2013521.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12530986 and 12531004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7937 + ... + 9383.

It is an arithmetic number, because the mean of its divisors is an integer number (1099756).

Almost surely, 2^12531020 is an apocalyptic number.

12531020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12531020 is an abundant number, since it is smaller than the sum of its proper divisors (13863124).

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

12531020 is a wasteful number, since it uses less digits than its factorization.

12531020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1889 (or 1887 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 12531020 is about 3539.9180781481. The cubic root of 12531020 is about 232.2712592107.

Adding to 12531020 its reverse (2013521), we get a palindrome (14544541).

The spelling of 12531020 in words is "twelve million, five hundred thirty-one thousand, twenty".