100815233 has 6 divisors (see below), whose sum is σ = 105389634. Its totient is φ = 96431456.

The previous prime is 100815229. The next prime is 100815241. The reversal of 100815233 is 332518001.

It can be written as a sum of positive squares in only one way, i.e., 70090384 + 30724849 = 8372^2 + 5543^2 .

It is not a de Polignac number, because 100815233 - 2² = 100815229 is a prime.

It is a super-2 number, since 2×100815233² = 20327422409688578, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 100815199 and 100815208.

It is not an unprimeable number, because it can be changed into a prime (100815283) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 94760 + ... + 95817.

It is an arithmetic number, because the mean of its divisors is an integer number (17564939).

Almost surely, 2^100815233 is an apocalyptic number.

It is an amenable number.

100815233 is a deficient number, since it is larger than the sum of its proper divisors (4574401).

100815233 is an equidigital number, since it uses as much as digits as its factorization.

100815233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190623 (or 190600 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 100815233 is about 10040.6789113087. The cubic root of 100815233 is about 465.4167966839.

The spelling of 100815233 in words is "one hundred million, eight hundred fifteen thousand, two hundred thirty-three".