12530134431 has 16 divisors (see below), whose sum is σ = 18587207520. Its totient is φ = 8342602560.

The previous prime is 12530134367. The next prime is 12530134469. The reversal of 12530134431 is 13443103521.

It is a happy number.

12530134431 is a `hidden beast` number, since 12 + 5 + 301 + 344 + 3 + 1 = 666.

It is not a de Polignac number, because 12530134431 - 2⁶ = 12530134367 is a prime.

It is a super-2 number, since 2×12530134431² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 12530134395 and 12530134404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12530134831) 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, 279310 + ... + 321051.

It is an arithmetic number, because the mean of its divisors is an integer number (1161700470).

Almost surely, 2^12530134431 is an apocalyptic number.

12530134431 is a deficient number, since it is larger than the sum of its proper divisors (6057073089).

12530134431 is an equidigital number, since it uses as much as digits as its factorization.

12530134431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601143 (or 601137 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 12530134431 its reverse (13443103521), we get a palindrome (25973237952).

The spelling of 12530134431 in words is "twelve billion, five hundred thirty million, one hundred thirty-four thousand, four hundred thirty-one".