100813812 has 36 divisors (see below), whose sum is σ = 258564768. Its totient is φ = 30549200.

The previous prime is 100813787. The next prime is 100813813. The reversal of 100813812 is 218318001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100813813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33264 + ... + 36167.

Almost surely, 2^100813812 is an apocalyptic number.

100813812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100813812 is an abundant number, since it is smaller than the sum of its proper divisors (157750956).

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

100813812 is a wasteful number, since it uses less digits than its factorization.

100813812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69460 (or 69447 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 100813812 is about 10040.6081489121. The cubic root of 100813812 is about 465.4146099761.

The spelling of 100813812 in words is "one hundred million, eight hundred thirteen thousand, eight hundred twelve".