1323130013 has 4 divisors (see below), whose sum is σ = 1324674780. Its totient is φ = 1321585248.

The previous prime is 1323129979. The next prime is 1323130049. The reversal of 1323130013 is 3100313231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3100313231 = 349 ⋅8883419.

It can be written as a sum of positive squares in 2 ways, for example, as 1192873444 + 130256569 = 34538^2 + 11413^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323130013 - 2⁶ = 1323129949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1323129973 and 1323130000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323130093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 771098 + ... + 772811.

It is an arithmetic number, because the mean of its divisors is an integer number (331168695).

Almost surely, 2^1323130013 is an apocalyptic number.

It is an amenable number.

1323130013 is a deficient number, since it is larger than the sum of its proper divisors (1544767).

1323130013 is an equidigital number, since it uses as much as digits as its factorization.

1323130013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1544766.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 1323130013 is about 36374.8541302917. The cubic root of 1323130013 is about 1097.8276723213.

Adding to 1323130013 its reverse (3100313231), we get a palindrome (4423443244).

The spelling of 1323130013 in words is "one billion, three hundred twenty-three million, one hundred thirty thousand, thirteen".