12331020 has 48 divisors (see below), whose sum is σ = 37185120. Its totient is φ = 3035136.

The previous prime is 12330991. The next prime is 12331049. The reversal of 12331020 is 2013321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12330991) and next prime (12331049).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 12330987 and 12331005.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7125 + ... + 8684.

It is an arithmetic number, because the mean of its divisors is an integer number (774690).

Almost surely, 2^12331020 is an apocalyptic number.

12331020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12331020 is an abundant number, since it is smaller than the sum of its proper divisors (24854100).

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

12331020 is a wasteful number, since it uses less digits than its factorization.

12331020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15834 (or 15832 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 12331020 is about 3511.5552110141. Note that the first 3 decimals coincide. The cubic root of 12331020 is about 231.0289126308.

Adding to 12331020 its reverse (2013321), we get a palindrome (14344341).

The spelling of 12331020 in words is "twelve million, three hundred thirty-one thousand, twenty".