1331363513 has 2 divisors, whose sum is σ = 1331363514. Its totient is φ = 1331363512.

The previous prime is 1331363503. The next prime is 1331363557. The reversal of 1331363513 is 3153631331.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1302343744 + 29019769 = 36088^2 + 5387^2 .

It is an emirp because it is prime and its reverse (3153631331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1331363513 - 2¹⁰ = 1331362489 is a prime.

It is not a weakly prime, because it can be changed into another prime (1331363503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665681756 + 665681757.

It is an arithmetic number, because the mean of its divisors is an integer number (665681757).

Almost surely, 2^1331363513 is an apocalyptic number.

It is an amenable number.

1331363513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331363513 is an equidigital number, since it uses as much as digits as its factorization.

1331363513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7290, while the sum is 29.

The square root of 1331363513 is about 36487.8543216781. The cubic root of 1331363513 is about 1100.1001322071.

Adding to 1331363513 its reverse (3153631331), we get a palindrome (4484994844).

The spelling of 1331363513 in words is "one billion, three hundred thirty-one million, three hundred sixty-three thousand, five hundred thirteen".