100811000 has 32 divisors (see below), whose sum is σ = 235900080. Its totient is φ = 40324000.

The previous prime is 100810993. The next prime is 100811021. The reversal of 100811000 is 118001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49406 + ... + 51405.

Almost surely, 2^100811000 is an apocalyptic number.

100811000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100811000 is an abundant number, since it is smaller than the sum of its proper divisors (135089080).

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

100811000 is a wasteful number, since it uses less digits than its factorization.

100811000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100832 (or 100818 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 100811000 is about 10040.4681165770. The cubic root of 100811000 is about 465.4102826654.

Adding to 100811000 its reverse (118001), we get a palindrome (100929001).

The spelling of 100811000 in words is "one hundred million, eight hundred eleven thousand".