12633431 has 4 divisors (see below), whose sum is σ = 13376592. Its totient is φ = 11890272.

The previous prime is 12633419. The next prime is 12633433. The reversal of 12633431 is 13433621.

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

It is a cyclic number.

It is not a de Polignac number, because 12633431 - 2⁶ = 12633367 is a prime.

It is a super-4 number, since 4×12633431⁴ (a number of 30 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12633397 and 12633406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12633433) 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, 371555 + ... + 371588.

It is an arithmetic number, because the mean of its divisors is an integer number (3344148).

Almost surely, 2^12633431 is an apocalyptic number.

12633431 is a deficient number, since it is larger than the sum of its proper divisors (743161).

12633431 is an equidigital number, since it uses as much as digits as its factorization.

12633431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743160.

The product of its digits is 1296, while the sum is 23.

The square root of 12633431 is about 3554.3538090629. The cubic root of 12633431 is about 232.9022965260.

The spelling of 12633431 in words is "twelve million, six hundred thirty-three thousand, four hundred thirty-one".