1331541513 has 6 divisors (see below), whose sum is σ = 1923337754. Its totient is φ = 887694336.

The previous prime is 1331541511. The next prime is 1331541517. The reversal of 1331541513 is 3151451331.

It is a happy number.

1331541513 is a `hidden beast` number, since 133 + 15 + 4 + 1 + 513 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1316818944 + 14722569 = 36288^2 + 3837^2 .

It is not a de Polignac number, because 1331541513 - 2¹ = 1331541511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331541511) 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 5 ways as a sum of consecutive naturals, for example, 73974520 + ... + 73974537.

Almost surely, 2^1331541513 is an apocalyptic number.

It is an amenable number.

1331541513 is a deficient number, since it is larger than the sum of its proper divisors (591796241).

1331541513 is a wasteful number, since it uses less digits than its factorization.

1331541513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147949063 (or 147949060 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 1331541513 is about 36490.2934079736. The cubic root of 1331541513 is about 1100.1491569088.

Adding to 1331541513 its reverse (3151451331), we get a palindrome (4482992844).

The spelling of 1331541513 in words is "one billion, three hundred thirty-one million, five hundred forty-one thousand, five hundred thirteen".