100442031 has 8 divisors (see below), whose sum is σ = 133970304. Its totient is φ = 66937560.

The previous prime is 100442021. The next prime is 100442039. The reversal of 100442031 is 130244001.

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

It is not a de Polignac number, because 100442031 - 2²¹ = 98344879 is a prime.

It is a super-2 number, since 2×100442031² = 20177203182809922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 100442031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100442039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10036 + ... + 17366.

It is an arithmetic number, because the mean of its divisors is an integer number (16746288).

Almost surely, 2^100442031 is an apocalyptic number.

100442031 is a deficient number, since it is larger than the sum of its proper divisors (33528273).

100442031 is an equidigital number, since it uses as much as digits as its factorization.

100442031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11901.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 100442031 is about 10022.0771799064. The cubic root of 100442031 is about 464.8417868504.

Adding to 100442031 its reverse (130244001), we get a palindrome (230686032).

It can be divided in two parts, 1004 and 42031, that multiplied together give a palindrome (42199124).

The spelling of 100442031 in words is "one hundred million, four hundred forty-two thousand, thirty-one".