1323012013 has 4 divisors (see below), whose sum is σ = 1324223548. Its totient is φ = 1321800480.

The previous prime is 1323012011. The next prime is 1323012037. The reversal of 1323012013 is 3102103231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3102103231 = 227 ⋅13665653.

It can be written as a sum of positive squares in 2 ways, for example, as 1314642564 + 8369449 = 36258^2 + 2893^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323012013 - 2¹ = 1323012011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323012011) 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, 604128 + ... + 606313.

It is an arithmetic number, because the mean of its divisors is an integer number (331055887).

Almost surely, 2^1323012013 is an apocalyptic number.

It is an amenable number.

1323012013 is a deficient number, since it is larger than the sum of its proper divisors (1211535).

1323012013 is a wasteful number, since it uses less digits than its factorization.

1323012013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211534.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1323012013 is about 36373.2320944950. The cubic root of 1323012013 is about 1097.7950356907.

Adding to 1323012013 its reverse (3102103231), we get a palindrome (4425115244).

The spelling of 1323012013 in words is "one billion, three hundred twenty-three million, twelve thousand, thirteen".