168400323 has 32 divisors (see below), whose sum is σ = 307059200. Its totient is φ = 88825248.

The previous prime is 168400291. The next prime is 168400333. The reversal of 168400323 is 323004861.

It is a happy number.

It is not a de Polignac number, because 168400323 - 2⁵ = 168400291 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (168400333) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31813 + ... + 36726.

It is an arithmetic number, because the mean of its divisors is an integer number (9595600).

Almost surely, 2^168400323 is an apocalyptic number.

168400323 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

168400323 is a deficient number, since it is larger than the sum of its proper divisors (138658877).

168400323 is a wasteful number, since it uses less digits than its factorization.

168400323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68568 (or 68562 counting only the distinct ones).

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

The square root of 168400323 is about 12976.9150031893. The cubic root of 168400323 is about 552.2227657122. Note that the first 3 decimals are identical.

The spelling of 168400323 in words is "one hundred sixty-eight million, four hundred thousand, three hundred twenty-three".