1320000013 has 4 divisors (see below), whose sum is σ = 1324664608. Its totient is φ = 1315335420.

The previous prime is 1320000001. The next prime is 1320000041. The reversal of 1320000013 is 3100000231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3100000231 = 2963 ⋅1046237.

It is a cyclic number.

It is not a de Polignac number, because 1320000013 - 2⁹ = 1319999501 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 (1320000083) 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, 2331873 + ... + 2332438.

It is an arithmetic number, because the mean of its divisors is an integer number (331166152).

Almost surely, 2^1320000013 is an apocalyptic number.

It is an amenable number.

1320000013 is a deficient number, since it is larger than the sum of its proper divisors (4664595).

1320000013 is an equidigital number, since it uses as much as digits as its factorization.

1320000013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4664594.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 1320000013 is about 36331.8044280765. The cubic root of 1320000013 is about 1096.9613140877.

Adding to 1320000013 its reverse (3100000231), we get a palindrome (4420000244).

The spelling of 1320000013 in words is "one billion, three hundred twenty million, thirteen", and thus it is an aban number.