100405323 has 6 divisors (see below), whose sum is σ = 145029924. Its totient is φ = 66936876.

The previous prime is 100405303. The next prime is 100405369. The reversal of 100405323 is 323504001.

It is not a de Polignac number, because 100405323 - 2¹⁰ = 100404299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100405296 and 100405305.

It is not an unprimeable number, because it can be changed into a prime (100405303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5578065 + ... + 5578082.

It is an arithmetic number, because the mean of its divisors is an integer number (24171654).

Almost surely, 2^100405323 is an apocalyptic number.

100405323 is a deficient number, since it is larger than the sum of its proper divisors (44624601).

100405323 is a wasteful number, since it uses less digits than its factorization.

100405323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11156153 (or 11156150 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 100405323 is about 10020.2456556713. The cubic root of 100405323 is about 464.7851522216.

Adding to 100405323 its reverse (323504001), we get a palindrome (423909324).

The spelling of 100405323 in words is "one hundred million, four hundred five thousand, three hundred twenty-three".