161022323 has 24 divisors (see below), whose sum is σ = 203777280. Its totient is φ = 124542000.

The previous prime is 161022313. The next prime is 161022343. The reversal of 161022323 is 323220161.

It is a happy number.

It is not a de Polignac number, because 161022323 - 2⁶ = 161022259 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161022295 and 161022304.

It is not an unprimeable number, because it can be changed into a prime (161022313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 127268 + ... + 128526.

It is an arithmetic number, because the mean of its divisors is an integer number (8490720).

Almost surely, 2^161022323 is an apocalyptic number.

161022323 is a deficient number, since it is larger than the sum of its proper divisors (42754957).

161022323 is a wasteful number, since it uses less digits than its factorization.

161022323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439 (or 1428 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 161022323 is about 12689.4571593902. The cubic root of 161022323 is about 544.0373242034.

Adding to 161022323 its reverse (323220161), we get a palindrome (484242484).

The spelling of 161022323 in words is "one hundred sixty-one million, twenty-two thousand, three hundred twenty-three".