3171021264949 has 2 divisors, whose sum is σ = 3171021264950. Its totient is φ = 3171021264948.

The previous prime is 3171021264941. The next prime is 3171021265031. The reversal of 3171021264949 is 9494621201713.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3169361272900 + 1659992049 = 1780270^2 + 40743^2 .

It is an emirp because it is prime and its reverse (9494621201713) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3171021264949 - 2³ = 3171021264941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3171021264941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1585510632474 + 1585510632475.

It is an arithmetic number, because the mean of its divisors is an integer number (1585510632475).

Almost surely, 2^{3171021264949} is an apocalyptic number.

It is an amenable number.

3171021264949 is a deficient number, since it is larger than the sum of its proper divisors (1).

3171021264949 is an equidigital number, since it uses as much as digits as its factorization.

3171021264949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 49.

The spelling of 3171021264949 in words is "three trillion, one hundred seventy-one billion, twenty-one million, two hundred sixty-four thousand, nine hundred forty-nine".