3215105317 has 2 divisors, whose sum is σ = 3215105318. Its totient is φ = 3215105316.

The previous prime is 3215105303. The next prime is 3215105351. The reversal of 3215105317 is 7135015123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2858613156 + 356492161 = 53466^2 + 18881^2 .

It is an emirp because it is prime and its reverse (7135015123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3215105317 - 2³¹ = 1067621669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3215105717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1607552658 + 1607552659.

It is an arithmetic number, because the mean of its divisors is an integer number (1607552659).

Almost surely, 2^3215105317 is an apocalyptic number.

It is an amenable number.

3215105317 is a deficient number, since it is larger than the sum of its proper divisors (1).

3215105317 is an equidigital number, since it uses as much as digits as its factorization.

3215105317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 3215105317 is about 56701.8987071862. The cubic root of 3215105317 is about 1475.9276465942.

The spelling of 3215105317 in words is "three billion, two hundred fifteen million, one hundred five thousand, three hundred seventeen".