3221260613 has 4 divisors (see below), whose sum is σ = 3222176940. Its totient is φ = 3220344288.

The previous prime is 3221260543. The next prime is 3221260621. The reversal of 3221260613 is 3160621223.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3160621223 = 983 ⋅3215281.

It can be written as a sum of positive squares in 2 ways, for example, as 281669089 + 2939591524 = 16783^2 + 54218^2 .

It is a cyclic number.

It is not a de Polignac number, because 3221260613 - 2¹² = 3221256517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221280613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 452870 + ... + 459927.

It is an arithmetic number, because the mean of its divisors is an integer number (805544235).

Almost surely, 2^3221260613 is an apocalyptic number.

It is an amenable number.

3221260613 is a deficient number, since it is larger than the sum of its proper divisors (916327).

3221260613 is an equidigital number, since it uses as much as digits as its factorization.

3221260613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916326.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 3221260613 is about 56756.1504420446. The cubic root of 3221260613 is about 1476.8689304430.

Adding to 3221260613 its reverse (3160621223), we get a palindrome (6381881836).

The spelling of 3221260613 in words is "three billion, two hundred twenty-one million, two hundred sixty thousand, six hundred thirteen".