168403023 has 16 divisors (see below), whose sum is σ = 262617600. Its totient is φ = 106359480.

The previous prime is 168402979. The next prime is 168403063. The reversal of 168403023 is 320304861.

It is a happy number.

It is not a de Polignac number, because 168403023 - 2⁹ = 168402511 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168403063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163623 + ... + 164648.

It is an arithmetic number, because the mean of its divisors is an integer number (16413600).

Almost surely, 2^168403023 is an apocalyptic number.

168403023 is a deficient number, since it is larger than the sum of its proper divisors (94214577).

168403023 is a wasteful number, since it uses less digits than its factorization.

168403023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328299 (or 328293 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 168403023 is about 12977.0190336610. The cubic root of 168403023 is about 552.2257170000.

Adding to 168403023 its reverse (320304861), we get a palindrome (488707884).

The spelling of 168403023 in words is "one hundred sixty-eight million, four hundred three thousand, twenty-three".