163523117 has 2 divisors, whose sum is σ = 163523118. Its totient is φ = 163523116.

The previous prime is 163523111. The next prime is 163523137. The reversal of 163523117 is 711325361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162282121 + 1240996 = 12739^2 + 1114^2 .

It is an emirp because it is prime and its reverse (711325361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163523117 - 2⁶ = 163523053 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163523117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163523111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81761558 + 81761559.

It is an arithmetic number, because the mean of its divisors is an integer number (81761559).

Almost surely, 2^163523117 is an apocalyptic number.

It is an amenable number.

163523117 is a deficient number, since it is larger than the sum of its proper divisors (1).

163523117 is an equidigital number, since it uses as much as digits as its factorization.

163523117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 29.

The square root of 163523117 is about 12787.6157668269. The cubic root of 163523117 is about 546.8393003178.

Adding to 163523117 its reverse (711325361), we get a palindrome (874848478).

The spelling of 163523117 in words is "one hundred sixty-three million, five hundred twenty-three thousand, one hundred seventeen".