12431351 has 4 divisors (see below), whose sum is σ = 12472152. Its totient is φ = 12390552.

The previous prime is 12431329. The next prime is 12431357. The reversal of 12431351 is 15313421.

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 12431351 - 2¹⁴ = 12414967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12431357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19940 + ... + 20553.

It is an arithmetic number, because the mean of its divisors is an integer number (3118038).

Almost surely, 2^12431351 is an apocalyptic number.

12431351 is a deficient number, since it is larger than the sum of its proper divisors (40801).

12431351 is an equidigital number, since it uses as much as digits as its factorization.

12431351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40800.

The product of its digits is 360, while the sum is 20.

The square root of 12431351 is about 3525.8121050334. The cubic root of 12431351 is about 231.6538076353.

Adding to 12431351 its reverse (15313421), we get a palindrome (27744772).

The spelling of 12431351 in words is "twelve million, four hundred thirty-one thousand, three hundred fifty-one".