1331045513 has 16 divisors (see below), whose sum is σ = 1612800000. Its totient is φ = 1073058192.

The previous prime is 1331045491. The next prime is 1331045539. The reversal of 1331045513 is 3155401331.

It is a cyclic number.

It is not a de Polignac number, because 1331045513 - 2⁸ = 1331045257 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1331048513) 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, 17513 + ... + 54486.

It is an arithmetic number, because the mean of its divisors is an integer number (100800000).

Almost surely, 2^1331045513 is an apocalyptic number.

It is an amenable number.

1331045513 is a deficient number, since it is larger than the sum of its proper divisors (281754487).

1331045513 is a wasteful number, since it uses less digits than its factorization.

1331045513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72164.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 1331045513 is about 36483.4964470238. The cubic root of 1331045513 is about 1100.0125378736.

Adding to 1331045513 its reverse (3155401331), we get a palindrome (4486446844).

The spelling of 1331045513 in words is "one billion, three hundred thirty-one million, forty-five thousand, five hundred thirteen".