100030812 has 48 divisors (see below), whose sum is σ = 267294720. Its totient is φ = 28521792.

The previous prime is 100030807. The next prime is 100030837. The reversal of 100030812 is 218030001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 100030791 and 100030800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55989 + ... + 57747.

It is an arithmetic number, because the mean of its divisors is an integer number (5568640).

Almost surely, 2^100030812 is an apocalyptic number.

100030812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100030812 is an abundant number, since it is smaller than the sum of its proper divisors (167263908).

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

100030812 is a wasteful number, since it uses less digits than its factorization.

100030812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2450 (or 2448 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 100030812 is about 10001.5404813459. The cubic root of 100030812 is about 464.2065506776.

Adding to 100030812 its reverse (218030001), we get a palindrome (318060813).

The spelling of 100030812 in words is "one hundred million, thirty thousand, eight hundred twelve".