13231240131245 has 4 divisors (see below), whose sum is σ = 15877488157500. Its totient is φ = 10584992104992.

The previous prime is 13231240131217. The next prime is 13231240131247. The reversal of 13231240131245 is 54213104213231.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3081243090409 + 10149997040836 = 1755347^2 + 3185906^2 .

It is a cyclic number.

It is not a de Polignac number, because 13231240131245 - 2¹⁰ = 13231240130221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231240131247) 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, 1323124013120 + ... + 1323124013129.

It is an arithmetic number, because the mean of its divisors is an integer number (3969372039375).

Almost surely, 2^{13231240131245} is an apocalyptic number.

It is an amenable number.

13231240131245 is a deficient number, since it is larger than the sum of its proper divisors (2646248026255).

13231240131245 is an equidigital number, since it uses as much as digits as its factorization.

13231240131245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2646248026254.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 13231240131245 its reverse (54213104213231), we get a palindrome (67444344344476).

The spelling of 13231240131245 in words is "thirteen trillion, two hundred thirty-one billion, two hundred forty million, one hundred thirty-one thousand, two hundred forty-five".