3261047513 has 4 divisors (see below), whose sum is σ = 3269652240. Its totient is φ = 3252442788.

The previous prime is 3261047509. The next prime is 3261047521. The reversal of 3261047513 is 3157401623.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3157401623 = 37 ⋅85335179.

It is a cyclic number.

It is not a de Polignac number, because 3261047513 - 2² = 3261047509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3261047513.

It is not an unprimeable number, because it can be changed into a prime (3261047533) 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 3 ways as a sum of consecutive naturals, for example, 4301795 + ... + 4302552.

It is an arithmetic number, because the mean of its divisors is an integer number (817413060).

Almost surely, 2^3261047513 is an apocalyptic number.

It is an amenable number.

3261047513 is a deficient number, since it is larger than the sum of its proper divisors (8604727).

3261047513 is an equidigital number, since it uses as much as digits as its factorization.

3261047513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8604726.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 3261047513 is about 57105.5821527108. The cubic root of 3261047513 is about 1482.9245060023.

The spelling of 3261047513 in words is "three billion, two hundred sixty-one million, forty-seven thousand, five hundred thirteen".