100434031 has 4 divisors (see below), whose sum is σ = 104800752. Its totient is φ = 96067312.

The previous prime is 100434023. The next prime is 100434041. The reversal of 100434031 is 130434001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130434001 = 137 ⋅952073.

It is a cyclic number.

It is not a de Polignac number, because 100434031 - 2³ = 100434023 is a prime.

It is a super-2 number, since 2×100434031² = 20173989165817922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100433996 and 100434014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100434041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2183326 + ... + 2183371.

It is an arithmetic number, because the mean of its divisors is an integer number (26200188).

Almost surely, 2^100434031 is an apocalyptic number.

100434031 is a deficient number, since it is larger than the sum of its proper divisors (4366721).

100434031 is an equidigital number, since it uses as much as digits as its factorization.

100434031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4366720.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 100434031 is about 10021.6780531007. The cubic root of 100434031 is about 464.8294452938.

Adding to 100434031 its reverse (130434001), we get a palindrome (230868032).

The spelling of 100434031 in words is "one hundred million, four hundred thirty-four thousand, thirty-one".