445145312317 has 2 divisors, whose sum is σ = 445145312318. Its totient is φ = 445145312316.

The previous prime is 445145312309. The next prime is 445145312371. The reversal of 445145312317 is 713213541544.

Together with next prime (445145312371) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 262975121721 + 182170190596 = 512811^2 + 426814^2 .

It is a cyclic number.

It is not a de Polignac number, because 445145312317 - 2³ = 445145312309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 445145312317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445145313317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222572656158 + 222572656159.

It is an arithmetic number, because the mean of its divisors is an integer number (222572656159).

Almost surely, 2^445145312317 is an apocalyptic number.

It is an amenable number.

445145312317 is a deficient number, since it is larger than the sum of its proper divisors (1).

445145312317 is an equidigital number, since it uses as much as digits as its factorization.

445145312317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 40.

The spelling of 445145312317 in words is "four hundred forty-five billion, one hundred forty-five million, three hundred twelve thousand, three hundred seventeen".