13131303230421 has 12 divisors (see below), whose sum is σ = 19013813158860. Its totient is φ = 8732798233920.

The previous prime is 13131303230387. The next prime is 13131303230449. The reversal of 13131303230421 is 12403230313131.

13131303230421 is a `hidden beast` number, since 1 + 3 + 1 + 3 + 1 + 3 + 0 + 3 + 230 + 421 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12258786575025 + 872516655396 = 3501255^2 + 934086^2 .

It is not a de Polignac number, because 13131303230421 - 2²⁹ = 13130766359509 is a prime.

It is a super-2 number, since 2×13131303230421² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131303230621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1783656090 + ... + 1783663451.

It is an arithmetic number, because the mean of its divisors is an integer number (1584484429905).

Almost surely, 2^{13131303230421} is an apocalyptic number.

It is an amenable number.

13131303230421 is a deficient number, since it is larger than the sum of its proper divisors (5882509928439).

13131303230421 is a wasteful number, since it uses less digits than its factorization.

13131303230421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3567319956 (or 3567319953 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 13131303230421 its reverse (12403230313131), we get a palindrome (25534533543552).

The spelling of 13131303230421 in words is "thirteen trillion, one hundred thirty-one billion, three hundred three million, two hundred thirty thousand, four hundred twenty-one".