1231530134325 has 48 divisors (see below), whose sum is σ = 2093978345856. Its totient is φ = 638203104000.

The previous prime is 1231530134321. The next prime is 1231530134333. The reversal of 1231530134325 is 5234310351321.

It is not a de Polignac number, because 1231530134325 - 2² = 1231530134321 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231530134321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1763175 + ... + 2360475.

It is an arithmetic number, because the mean of its divisors is an integer number (43624548872).

Almost surely, 2^{1231530134325} is an apocalyptic number.

1231530134325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1231530134325 is a deficient number, since it is larger than the sum of its proper divisors (862448211531).

1231530134325 is a wasteful number, since it uses less digits than its factorization.

1231530134325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598094 (or 598089 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 33.

Adding to 1231530134325 its reverse (5234310351321), we get a palindrome (6465840485646).

The spelling of 1231530134325 in words is "one trillion, two hundred thirty-one billion, five hundred thirty million, one hundred thirty-four thousand, three hundred twenty-five".