100815243 has 8 divisors (see below), whose sum is σ = 136313856. Its totient is φ = 66263400.

The previous prime is 100815241. The next prime is 100815251. The reversal of 100815243 is 342518001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100815243 - 2¹ = 100815241 is a prime.

It is a super-2 number, since 2×100815243² = 20327426442298098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100815241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236443 + ... + 236868.

It is an arithmetic number, because the mean of its divisors is an integer number (17039232).

Almost surely, 2^100815243 is an apocalyptic number.

100815243 is a deficient number, since it is larger than the sum of its proper divisors (35498613).

100815243 is an equidigital number, since it uses as much as digits as its factorization.

100815243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473385.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 100815243 is about 10040.6794092830. The cubic root of 100815243 is about 465.4168120723.

The spelling of 100815243 in words is "one hundred million, eight hundred fifteen thousand, two hundred forty-three".