100031898 has 8 divisors (see below), whose sum is σ = 200063808. Its totient is φ = 33343964.

The previous prime is 100031891. The next prime is 100031917. The reversal of 100031898 is 898130001.

It is a sphenic number, since it is the product of 3 distinct primes.

100031898 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (100031891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8335986 + ... + 8335997.

It is an arithmetic number, because the mean of its divisors is an integer number (25007976).

Almost surely, 2^100031898 is an apocalyptic number.

100031898 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

100031898 is a wasteful number, since it uses less digits than its factorization.

100031898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16671988.

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 100031898 is about 10001.5947728350. The cubic root of 100031898 is about 464.2082305816.

Adding to 100031898 its reverse (898130001), we get a palindrome (998161899).

The spelling of 100031898 in words is "one hundred million, thirty-one thousand, eight hundred ninety-eight".