100312207 has 4 divisors (see below), whose sum is σ = 100341936. Its totient is φ = 100282480.

The previous prime is 100312151. The next prime is 100312253. The reversal of 100312207 is 702213001.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100312207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100312297) 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, 9043 + ... + 16804.

It is an arithmetic number, because the mean of its divisors is an integer number (25085484).

Almost surely, 2^100312207 is an apocalyptic number.

100312207 is a deficient number, since it is larger than the sum of its proper divisors (29729).

100312207 is an equidigital number, since it uses as much as digits as its factorization.

100312207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29728.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 100312207 is about 10015.5981848315. The cubic root of 100312207 is about 464.6414270391.

Adding to 100312207 its reverse (702213001), we get a palindrome (802525208).

The spelling of 100312207 in words is "one hundred million, three hundred twelve thousand, two hundred seven".