1320013111 has 4 divisors (see below), whose sum is σ = 1320120000. Its totient is φ = 1319906224.

The previous prime is 1320013063. The next prime is 1320013169. The reversal of 1320013111 is 1113100231.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1320013111 - 2⁹ = 1320012599 is a prime.

It is a super-2 number, since 2×1320013111² = 3484869226423796642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1320013091 and 1320013100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320013181) 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, 32071 + ... + 60568.

It is an arithmetic number, because the mean of its divisors is an integer number (330030000).

Almost surely, 2^1320013111 is an apocalyptic number.

1320013111 is a deficient number, since it is larger than the sum of its proper divisors (106889).

1320013111 is an equidigital number, since it uses as much as digits as its factorization.

1320013111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106888.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1320013111 is about 36331.9846829209. The cubic root of 1320013111 is about 1096.9649423583.

Adding to 1320013111 its reverse (1113100231), we get a palindrome (2433113342).

The spelling of 1320013111 in words is "one billion, three hundred twenty million, thirteen thousand, one hundred eleven".