1320241013 has 16 divisors (see below), whose sum is σ = 1634545920. Its totient is φ = 1044574128.

The previous prime is 1320240983. The next prime is 1320241031. The reversal of 1320241013 is 3101420231.

It is a de Polignac number, because none of the positive numbers 2^k-1320241013 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1320240982 and 1320241000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320241033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27545 + ... + 58302.

It is an arithmetic number, because the mean of its divisors is an integer number (102159120).

Almost surely, 2^1320241013 is an apocalyptic number.

1320241013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1320241013 is a deficient number, since it is larger than the sum of its proper divisors (314304907).

1320241013 is an frugal number, since it uses more digits than its factorization.

1320241013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85893 (or 85867 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1320241013 is about 36335.1209300313. The cubic root of 1320241013 is about 1097.0280695388.

Adding to 1320241013 its reverse (3101420231), we get a palindrome (4421661244).

The spelling of 1320241013 in words is "one billion, three hundred twenty million, two hundred forty-one thousand, thirteen".