1320013 has 4 divisors (see below), whose sum is σ = 1323328. Its totient is φ = 1316700.

The previous prime is 1319963. The next prime is 1320019. The reversal of 1320013 is 3100231.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320013 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 (1320019) 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, 963 + ... + 1888.

It is an arithmetic number, because the mean of its divisors is an integer number (330832).

2^1320013 is an apocalyptic number.

It is an amenable number.

1320013 is a deficient number, since it is larger than the sum of its proper divisors (3315).

1320013 is an equidigital number, since it uses as much as digits as its factorization.

1320013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3314.

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

The square root of 1320013 is about 1148.9181868175. The cubic root of 1320013 is about 109.6964911610.

Adding to 1320013 its reverse (3100231), we get a palindrome (4420244).

The spelling of 1320013 in words is "one million, three hundred twenty thousand, thirteen".