100312193 has 4 divisors (see below), whose sum is σ = 100509780. Its totient is φ = 100114608.

The previous prime is 100312151. The next prime is 100312253. The reversal of 100312193 is 391213001.

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 87011584 + 13300609 = 9328^2 + 3647^2 .

It is a cyclic number.

It is not a de Polignac number, because 100312193 - 2⁶ = 100312129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100312103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98030 + ... + 99047.

It is an arithmetic number, because the mean of its divisors is an integer number (25127445).

Almost surely, 2^100312193 is an apocalyptic number.

It is an amenable number.

100312193 is a deficient number, since it is larger than the sum of its proper divisors (197587).

100312193 is an equidigital number, since it uses as much as digits as its factorization.

100312193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197586.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 100312193 is about 10015.5974859216. The cubic root of 100312193 is about 464.6414054233.

Adding to 100312193 its reverse (391213001), we get a palindrome (491525194).

The spelling of 100312193 in words is "one hundred million, three hundred twelve thousand, one hundred ninety-three".