100031982 has 16 divisors (see below), whose sum is σ = 200440272. Its totient is φ = 33281280.

The previous prime is 100031969. The next prime is 100031989. The reversal of 100031982 is 289130001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100031989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12163 + ... + 18654.

It is an arithmetic number, because the mean of its divisors is an integer number (12527517).

Almost surely, 2^100031982 is an apocalyptic number.

100031982 is an abundant number, since it is smaller than the sum of its proper divisors (100408290).

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

100031982 is a wasteful number, since it uses less digits than its factorization.

100031982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31363.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 100031982 is about 10001.5989721644. The cubic root of 100031982 is about 464.2083605184.

Adding to 100031982 its reverse (289130001), we get a palindrome (389161983).

The spelling of 100031982 in words is "one hundred million, thirty-one thousand, nine hundred eighty-two".