100313243 has 4 divisors (see below), whose sum is σ = 106214040. Its totient is φ = 94412448.

The previous prime is 100313237. The next prime is 100313261. The reversal of 100313243 is 342313001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342313001 = 773 ⋅442837.

It is a cyclic number.

It is not a de Polignac number, because 100313243 - 2²⁰ = 99264667 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: 5900779 = 100313243 / (1 + 0 + 0 + 3 + 1 + 3 + 2 + 4 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100313203) 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, 2950373 + ... + 2950406.

It is an arithmetic number, because the mean of its divisors is an integer number (26553510).

Almost surely, 2^100313243 is an apocalyptic number.

100313243 is a deficient number, since it is larger than the sum of its proper divisors (5900797).

100313243 is an equidigital number, since it uses as much as digits as its factorization.

100313243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5900796.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 100313243 is about 10015.6499040252. The cubic root of 100313243 is about 464.6430266013.

Adding to 100313243 its reverse (342313001), we get a palindrome (442626244).

The spelling of 100313243 in words is "one hundred million, three hundred thirteen thousand, two hundred forty-three".