12531023 has 4 divisors (see below), whose sum is σ = 13268160. Its totient is φ = 11793888.

The previous prime is 12531019. The next prime is 12531041. The reversal of 12531023 is 32013521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32013521 = 1483 ⋅21587.

It is a cyclic number.

It is not a de Polignac number, because 12531023 - 2² = 12531019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 737119 = 12531023 / (1 + 2 + 5 + 3 + 1 + 0 + 2 + 3).

It is a junction number, because it is equal to n+sod(n) for n = 12530992 and 12531010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12531053) 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, 368543 + ... + 368576.

It is an arithmetic number, because the mean of its divisors is an integer number (3317040).

Almost surely, 2^12531023 is an apocalyptic number.

12531023 is a deficient number, since it is larger than the sum of its proper divisors (737137).

12531023 is an equidigital number, since it uses as much as digits as its factorization.

12531023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737136.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 12531023 is about 3539.9185018867. The cubic root of 12531023 is about 232.2712777464.

Adding to 12531023 its reverse (32013521), we get a palindrome (44544544).

The spelling of 12531023 in words is "twelve million, five hundred thirty-one thousand, twenty-three".