162081317 has 2 divisors, whose sum is σ = 162081318. Its totient is φ = 162081316.

The previous prime is 162081313. The next prime is 162081341. The reversal of 162081317 is 713180261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121198081 + 40883236 = 11009^2 + 6394^2 .

It is an emirp because it is prime and its reverse (713180261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 162081317 - 2² = 162081313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 162081317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162081313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81040658 + 81040659.

It is an arithmetic number, because the mean of its divisors is an integer number (81040659).

Almost surely, 2^162081317 is an apocalyptic number.

It is an amenable number.

162081317 is a deficient number, since it is larger than the sum of its proper divisors (1).

162081317 is an equidigital number, since it uses as much as digits as its factorization.

162081317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 162081317 is about 12731.1160940430. The cubic root of 162081317 is about 545.2273741945.

The spelling of 162081317 in words is "one hundred sixty-two million, eighty-one thousand, three hundred seventeen".