12681333 has 32 divisors (see below), whose sum is σ = 21638400. Its totient is φ = 7190208.

The previous prime is 12681329. The next prime is 12681353. The reversal of 12681333 is 33318621.

It is a happy number.

It is not a de Polignac number, because 12681333 - 2² = 12681329 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 12681297 and 12681306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12681353) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43135 + ... + 43427.

It is an arithmetic number, because the mean of its divisors is an integer number (676200).

Almost surely, 2^12681333 is an apocalyptic number.

It is an amenable number.

12681333 is a deficient number, since it is larger than the sum of its proper divisors (8957067).

12681333 is a wasteful number, since it uses less digits than its factorization.

12681333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538 (or 532 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 12681333 is about 3561.0859298815. The cubic root of 12681333 is about 233.1962893668.

Adding to 12681333 its reverse (33318621), we get a palindrome (45999954).

It can be divided in two parts, 1268 and 1333, that added together give a square (2601 = 51²).

The spelling of 12681333 in words is "twelve million, six hundred eighty-one thousand, three hundred thirty-three".