163310423 has 4 divisors (see below), whose sum is σ = 165747960. Its totient is φ = 160872888.

The previous prime is 163310401. The next prime is 163310467. The reversal of 163310423 is 324013361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324013361 = 7 ⋅46287623.

It is a cyclic number.

It is not a de Polignac number, because 163310423 - 2⁸ = 163310167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163310023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1218668 + ... + 1218801.

It is an arithmetic number, because the mean of its divisors is an integer number (41436990).

Almost surely, 2^163310423 is an apocalyptic number.

163310423 is a deficient number, since it is larger than the sum of its proper divisors (2437537).

163310423 is an equidigital number, since it uses as much as digits as its factorization.

163310423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2437536.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 163310423 is about 12779.2966551372. The cubic root of 163310423 is about 546.6021067341.

Adding to 163310423 its reverse (324013361), we get a palindrome (487323784).

The spelling of 163310423 in words is "one hundred sixty-three million, three hundred ten thousand, four hundred twenty-three".