13130230321 has 4 divisors (see below), whose sum is σ = 14140248052. Its totient is φ = 12120212592.

The previous prime is 13130230319. The next prime is 13130230339. The reversal of 13130230321 is 12303203131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12303203131 = 1861 ⋅6611071.

It can be written as a sum of positive squares in 2 ways, for example, as 8716089600 + 4414140721 = 93360^2 + 66439^2 .

It is a cyclic number.

It is not a de Polignac number, because 13130230321 - 2¹ = 13130230319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13130230391) 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, 505008846 + ... + 505008871.

It is an arithmetic number, because the mean of its divisors is an integer number (3535062013).

Almost surely, 2^13130230321 is an apocalyptic number.

It is an amenable number.

13130230321 is a deficient number, since it is larger than the sum of its proper divisors (1010017731).

13130230321 is a wasteful number, since it uses less digits than its factorization.

13130230321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010017730.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 13130230321 its reverse (12303203131), we get a palindrome (25433433452).

The spelling of 13130230321 in words is "thirteen billion, one hundred thirty million, two hundred thirty thousand, three hundred twenty-one".