100131812 has 12 divisors (see below), whose sum is σ = 191160816. Its totient is φ = 45514440.

The previous prime is 100131769. The next prime is 100131827. The reversal of 100131812 is 218131001.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1137818 + ... + 1137905.

It is an arithmetic number, because the mean of its divisors is an integer number (15930068).

Almost surely, 2^100131812 is an apocalyptic number.

It is an amenable number.

100131812 is a deficient number, since it is larger than the sum of its proper divisors (91029004).

100131812 is a wasteful number, since it uses less digits than its factorization.

100131812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2275738 (or 2275736 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 100131812 is about 10006.5884296298. The cubic root of 100131812 is about 464.3627328572.

Adding to 100131812 its reverse (218131001), we get a palindrome (318262813).

The spelling of 100131812 in words is "one hundred million, one hundred thirty-one thousand, eight hundred twelve".