100405233 has 6 divisors (see below), whose sum is σ = 145029794. Its totient is φ = 66936816.

The previous prime is 100405231. The next prime is 100405237. The reversal of 100405233 is 332504001.

100405233 is a `hidden beast` number, since 100 + 40 + 523 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 71115489 + 29289744 = 8433^2 + 5412^2 .

It is not a de Polignac number, because 100405233 - 2¹ = 100405231 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100405231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5578060 + ... + 5578077.

Almost surely, 2^100405233 is an apocalyptic number.

It is an amenable number.

100405233 is a deficient number, since it is larger than the sum of its proper divisors (44624561).

100405233 is a wasteful number, since it uses less digits than its factorization.

100405233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11156143 (or 11156140 counting only the distinct ones).

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

The square root of 100405233 is about 10020.2411647625. The cubic root of 100405233 is about 464.7850133489.

Adding to 100405233 its reverse (332504001), we get a palindrome (432909234).

The spelling of 100405233 in words is "one hundred million, four hundred five thousand, two hundred thirty-three".