12530431 has 4 divisors (see below), whose sum is σ = 12622032. Its totient is φ = 12438832.

The previous prime is 12530429. The next prime is 12530459. The reversal of 12530431 is 13403521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13403521 = 173 ⋅77477.

It is a cyclic number.

It is not a de Polignac number, because 12530431 - 2¹ = 12530429 is a prime.

It is a super-2 number, since 2×12530431² = 314023402091522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12530399 and 12530408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12530471) 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, 45595 + ... + 45868.

It is an arithmetic number, because the mean of its divisors is an integer number (3155508).

Almost surely, 2^12530431 is an apocalyptic number.

12530431 is a deficient number, since it is larger than the sum of its proper divisors (91601).

12530431 is an equidigital number, since it uses as much as digits as its factorization.

12530431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91600.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 12530431 is about 3539.8348831549. The cubic root of 12530431 is about 232.2676199774.

Adding to 12530431 its reverse (13403521), we get a palindrome (25933952).

The spelling of 12530431 in words is "twelve million, five hundred thirty thousand, four hundred thirty-one".