2101445317 has 2 divisors, whose sum is σ = 2101445318. Its totient is φ = 2101445316.

The previous prime is 2101445279. The next prime is 2101445321. The reversal of 2101445317 is 7135441012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1312902756 + 788542561 = 36234^2 + 28081^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101445317 - 2²³ = 2093056709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101445387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050722658 + 1050722659.

It is an arithmetic number, because the mean of its divisors is an integer number (1050722659).

Almost surely, 2^2101445317 is an apocalyptic number.

It is an amenable number.

2101445317 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101445317 is an equidigital number, since it uses as much as digits as its factorization.

2101445317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 2101445317 is about 45841.5239384556. The cubic root of 2101445317 is about 1280.8728821918.

Adding to 2101445317 its reverse (7135441012), we get a palindrome (9236886329).

The spelling of 2101445317 in words is "two billion, one hundred one million, four hundred forty-five thousand, three hundred seventeen".