3311253665 has 4 divisors (see below), whose sum is σ = 3973504404. Its totient is φ = 2649002928.

The previous prime is 3311253661. The next prime is 3311253677. The reversal of 3311253665 is 5663521133.

3311253665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5663521133 = 17623 ⋅321371.

It can be written as a sum of positive squares in 2 ways, for example, as 1955762176 + 1355491489 = 44224^2 + 36817^2 .

It is a cyclic number.

It is not a de Polignac number, because 3311253665 - 2² = 3311253661 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3311253661) 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, 331125362 + ... + 331125371.

It is an arithmetic number, because the mean of its divisors is an integer number (993376101).

Almost surely, 2^3311253665 is an apocalyptic number.

It is an amenable number.

3311253665 is a deficient number, since it is larger than the sum of its proper divisors (662250739).

3311253665 is an equidigital number, since it uses as much as digits as its factorization.

3311253665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662250738.

The product of its digits is 48600, while the sum is 35.

The square root of 3311253665 is about 57543.4936808672. The cubic root of 3311253665 is about 1490.4960084604.

Adding to 3311253665 its reverse (5663521133), we get a palindrome (8974774798).

The spelling of 3311253665 in words is "three billion, three hundred eleven million, two hundred fifty-three thousand, six hundred sixty-five".