100440233 has 4 divisors (see below), whose sum is σ = 106348500. Its totient is φ = 94531968.

The previous prime is 100440229. The next prime is 100440239. The reversal of 100440233 is 332044001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39100009 + 61340224 = 6253^2 + 7832^2 .

It is not a de Polignac number, because 100440233 - 2² = 100440229 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 5908249 = 100440233 / (1 + 0 + 0 + 4 + 4 + 0 + 2 + 3 + 3).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100440239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2954108 + ... + 2954141.

It is an arithmetic number, because the mean of its divisors is an integer number (26587125).

Almost surely, 2^100440233 is an apocalyptic number.

It is an amenable number.

100440233 is a deficient number, since it is larger than the sum of its proper divisors (5908267).

100440233 is an equidigital number, since it uses as much as digits as its factorization.

100440233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5908266.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 100440233 is about 10021.9874775416. The cubic root of 100440233 is about 464.8390131426.

Adding to 100440233 its reverse (332044001), we get a palindrome (432484234).

The spelling of 100440233 in words is "one hundred million, four hundred forty thousand, two hundred thirty-three".