12604331 has 4 divisors (see below), whose sum is σ = 12650112. Its totient is φ = 12558552.

The previous prime is 12604313. The next prime is 12604337. The reversal of 12604331 is 13340621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12604331 is a prime.

It is a super-3 number, since 3×12604331³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12604337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22475 + ... + 23028.

It is an arithmetic number, because the mean of its divisors is an integer number (3162528).

Almost surely, 2^12604331 is an apocalyptic number.

12604331 is a deficient number, since it is larger than the sum of its proper divisors (45781).

12604331 is an equidigital number, since it uses as much as digits as its factorization.

12604331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45780.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 12604331 is about 3550.2578779576. The cubic root of 12604331 is about 232.7233357128.

Adding to 12604331 its reverse (13340621), we get a palindrome (25944952).

The spelling of 12604331 in words is "twelve million, six hundred four thousand, three hundred thirty-one".