12351423 has 16 divisors (see below), whose sum is σ = 19429376. Its totient is φ = 6829920.

The previous prime is 12351407. The next prime is 12351431. The reversal of 12351423 is 32415321.

It is not a de Polignac number, because 12351423 - 2⁴ = 12351407 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12351423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12351433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8836 + ... + 10137.

It is an arithmetic number, because the mean of its divisors is an integer number (1214336).

Almost surely, 2^12351423 is an apocalyptic number.

12351423 is a deficient number, since it is larger than the sum of its proper divisors (7077953).

12351423 is a wasteful number, since it uses less digits than its factorization.

12351423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19014.

The product of its digits is 720, while the sum is 21.

The square root of 12351423 is about 3514.4591333518. The cubic root of 12351423 is about 231.1562631534.

Adding to 12351423 its reverse (32415321), we get a palindrome (44766744).

The spelling of 12351423 in words is "twelve million, three hundred fifty-one thousand, four hundred twenty-three".