163201523 has 4 divisors (see below), whose sum is σ = 165500208. Its totient is φ = 160902840.

The previous prime is 163201463. The next prime is 163201541. The reversal of 163201523 is 325102361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 325102361 = 73 ⋅4453457.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163201523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163201573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1149236 + ... + 1149377.

It is an arithmetic number, because the mean of its divisors is an integer number (41375052).

Almost surely, 2^163201523 is an apocalyptic number.

163201523 is a deficient number, since it is larger than the sum of its proper divisors (2298685).

163201523 is an equidigital number, since it uses as much as digits as its factorization.

163201523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2298684.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 163201523 is about 12775.0351467227. The cubic root of 163201523 is about 546.4805831469.

Adding to 163201523 its reverse (325102361), we get a palindrome (488303884).

The spelling of 163201523 in words is "one hundred sixty-three million, two hundred one thousand, five hundred twenty-three".