12131423 has 4 divisors (see below), whose sum is σ = 12186048. Its totient is φ = 12076800.

The previous prime is 12131417. The next prime is 12131429. The reversal of 12131423 is 32413121.

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

It is an interprime number because it is at equal distance from previous prime (12131417) and next prime (12131429).

It is a cyclic number.

It is not a de Polignac number, because 12131423 - 2¹⁴ = 12115039 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 (12131429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26978 + ... + 27423.

It is an arithmetic number, because the mean of its divisors is an integer number (3046512).

Almost surely, 2^12131423 is an apocalyptic number.

12131423 is a deficient number, since it is larger than the sum of its proper divisors (54625).

12131423 is an equidigital number, since it uses as much as digits as its factorization.

12131423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54624.

The product of its digits is 144, while the sum is 17.

The square root of 12131423 is about 3483.0192362374. The cubic root of 12131423 is about 229.7756034478.

Adding to 12131423 its reverse (32413121), we get a palindrome (44544544).

The spelling of 12131423 in words is "twelve million, one hundred thirty-one thousand, four hundred twenty-three".