15131423 has 4 divisors (see below), whose sum is σ = 15323040. Its totient is φ = 14939808.

The previous prime is 15131387. The next prime is 15131437. The reversal of 15131423 is 32413151.

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 15131423 - 2⁸ = 15131167 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15131395 and 15131404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15133423) 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, 95690 + ... + 95847.

It is an arithmetic number, because the mean of its divisors is an integer number (3830760).

Almost surely, 2^15131423 is an apocalyptic number.

15131423 is a deficient number, since it is larger than the sum of its proper divisors (191617).

15131423 is an equidigital number, since it uses as much as digits as its factorization.

15131423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191616.

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

The square root of 15131423 is about 3889.9129810318. The cubic root of 15131423 is about 247.3393740619.

Adding to 15131423 its reverse (32413151), we get a palindrome (47544574).

The spelling of 15131423 in words is "fifteen million, one hundred thirty-one thousand, four hundred twenty-three".