12131064 has 144 divisors (see below), whose sum is σ = 38792520. Its totient is φ = 3394560.

The previous prime is 12131059. The next prime is 12131069. The reversal of 12131064 is 46013121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12131059) and next prime (12131069).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131069) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 228862 + ... + 228914.

Almost surely, 2^12131064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12131064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19396260).

12131064 is an abundant number, since it is smaller than the sum of its proper divisors (26661456).

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

12131064 is a wasteful number, since it uses less digits than its factorization.

12131064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 12131064 is about 3482.9677001086. The cubic root of 12131064 is about 229.7733368751.

Adding to 12131064 its reverse (46013121), we get a palindrome (58144185).

The spelling of 12131064 in words is "twelve million, one hundred thirty-one thousand, sixty-four".