1320043113 has 6 divisors (see below), whose sum is σ = 1906728954. Its totient is φ = 880028736.

The previous prime is 1320043051. The next prime is 1320043133. The reversal of 1320043113 is 3113400231.

It can be written as a sum of positive squares in only one way, i.e., 950365584 + 369677529 = 30828^2 + 19227^2 .

It is not a de Polignac number, because 1320043113 - 2¹⁶ = 1319977577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1320043133) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73335720 + ... + 73335737.

It is an arithmetic number, because the mean of its divisors is an integer number (317788159).

Almost surely, 2^1320043113 is an apocalyptic number.

It is an amenable number.

1320043113 is a deficient number, since it is larger than the sum of its proper divisors (586685841).

1320043113 is a wasteful number, since it uses less digits than its factorization.

1320043113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146671463 (or 146671460 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1320043113 is about 36332.3975674604. The cubic root of 1320043113 is about 1096.9732531073.

Adding to 1320043113 its reverse (3113400231), we get a palindrome (4433443344).

The spelling of 1320043113 in words is "one billion, three hundred twenty million, forty-three thousand, one hundred thirteen".