12438131 has 8 divisors (see below), whose sum is σ = 12656784. Its totient is φ = 12221280.

The previous prime is 12438121. The next prime is 12438149. The reversal of 12438131 is 13183421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12438131 - 2¹⁸ = 12175987 is a prime.

It is a super-2 number, since 2×12438131² = 309414205546322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12438097 and 12438106.

It is not an unprimeable number, because it can be changed into a prime (12438121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22721 + ... + 23261.

It is an arithmetic number, because the mean of its divisors is an integer number (1582098).

Almost surely, 2^12438131 is an apocalyptic number.

12438131 is a deficient number, since it is larger than the sum of its proper divisors (218653).

12438131 is an equidigital number, since it uses as much as digits as its factorization.

12438131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901.

The product of its digits is 576, while the sum is 23.

The square root of 12438131 is about 3526.7734545899. The cubic root of 12438131 is about 231.6959142780.

The spelling of 12438131 in words is "twelve million, four hundred thirty-eight thousand, one hundred thirty-one".