12131336 has 32 divisors (see below), whose sum is σ = 27527040. Its totient is φ = 4892928.

The previous prime is 12131321. The next prime is 12131347. The reversal of 12131336 is 63313121.

It is a happy number.

It is a congruent number.

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, 5420 + ... + 7323.

It is an arithmetic number, because the mean of its divisors is an integer number (860220).

Almost surely, 2^12131336 is an apocalyptic number.

It is an amenable number.

12131336 is an abundant number, since it is smaller than the sum of its proper divisors (15395704).

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

12131336 is a wasteful number, since it uses less digits than its factorization.

12131336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12773 (or 12769 counting only the distinct ones).

The product of its digits is 324, while the sum is 20.

The square root of 12131336 is about 3483.0067470506. The cubic root of 12131336 is about 229.7750541711.

Adding to 12131336 its reverse (63313121), we get a palindrome (75444457).

The spelling of 12131336 in words is "twelve million, one hundred thirty-one thousand, three hundred thirty-six".