1363521313 has 16 divisors (see below), whose sum is σ = 1716489216. Its totient is φ = 1052162640.

The previous prime is 1363521287. The next prime is 1363521317. The reversal of 1363521313 is 3131253631.

It is a cyclic number.

It is not a de Polignac number, because 1363521313 - 2⁹ = 1363520801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1363521317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78031 + ... + 93892.

It is an arithmetic number, because the mean of its divisors is an integer number (107280576).

Almost surely, 2^1363521313 is an apocalyptic number.

It is an amenable number.

1363521313 is a deficient number, since it is larger than the sum of its proper divisors (352967903).

1363521313 is a wasteful number, since it uses less digits than its factorization.

1363521313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172044.

The product of its digits is 4860, while the sum is 28.

The square root of 1363521313 is about 36925.8894679600. The cubic root of 1363521313 is about 1108.8870464036.

Adding to 1363521313 its reverse (3131253631), we get a palindrome (4494774944).

The spelling of 1363521313 in words is "one billion, three hundred sixty-three million, five hundred twenty-one thousand, three hundred thirteen".