3251666317 has 2 divisors, whose sum is σ = 3251666318. Its totient is φ = 3251666316.

The previous prime is 3251666287. The next prime is 3251666339. The reversal of 3251666317 is 7136661523.

3251666317 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1672319236 + 1579347081 = 40894^2 + 39741^2 .

It is a cyclic number.

It is not a de Polignac number, because 3251666317 - 2¹⁵ = 3251633549 is a prime.

It is a super-2 number, since 2×3251666317² = 21146667674224688978, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3251666317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3251666917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1625833158 + 1625833159.

It is an arithmetic number, because the mean of its divisors is an integer number (1625833159).

Almost surely, 2^3251666317 is an apocalyptic number.

It is an amenable number.

3251666317 is a deficient number, since it is larger than the sum of its proper divisors (1).

3251666317 is an equidigital number, since it uses as much as digits as its factorization.

3251666317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 40.

The square root of 3251666317 is about 57023.3839490432. The cubic root of 3251666317 is about 1481.5011426211.

The spelling of 3251666317 in words is "three billion, two hundred fifty-one million, six hundred sixty-six thousand, three hundred seventeen".