100320312 has 32 divisors (see below), whose sum is σ = 251456400. Its totient is φ = 33352704.

The previous prime is 100320307. The next prime is 100320313. The reversal of 100320312 is 213023001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100320313) 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, 4264 + ... + 14792.

Almost surely, 2^100320312 is an apocalyptic number.

100320312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100320312 is an abundant number, since it is smaller than the sum of its proper divisors (151136088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100320312 is a wasteful number, since it uses less digits than its factorization.

100320312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10935 (or 10931 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 100320312 is about 10016.0027955268. The cubic root of 100320312 is about 464.6539406951.

Adding to 100320312 its reverse (213023001), we get a palindrome (313343313).

The spelling of 100320312 in words is "one hundred million, three hundred twenty thousand, three hundred twelve".