317416226821 has 2 divisors, whose sum is σ = 317416226822. Its totient is φ = 317416226820.

The previous prime is 317416226797. The next prime is 317416226873. The reversal of 317416226821 is 128622614713.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 293532069796 + 23884157025 = 541786^2 + 154545^2 .

It is a cyclic number.

It is not a de Polignac number, because 317416226821 - 2²⁹ = 316879355909 is a prime.

It is a super-3 number, since 3×317416226821³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (317416226221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158708113410 + 158708113411.

It is an arithmetic number, because the mean of its divisors is an integer number (158708113411).

Almost surely, 2^317416226821 is an apocalyptic number.

It is an amenable number.

317416226821 is a deficient number, since it is larger than the sum of its proper divisors (1).

317416226821 is an equidigital number, since it uses as much as digits as its factorization.

317416226821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 43.

The spelling of 317416226821 in words is "three hundred seventeen billion, four hundred sixteen million, two hundred twenty-six thousand, eight hundred twenty-one".