100043023 has 4 divisors (see below), whose sum is σ = 100077048. Its totient is φ = 100009000.

The previous prime is 100043003. The next prime is 100043029. The reversal of 100043023 is 320340001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100043023 - 2⁵ = 100042991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100042994 and 100043012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100043029) 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, 12136 + ... + 18637.

It is an arithmetic number, because the mean of its divisors is an integer number (25019262).

Almost surely, 2^100043023 is an apocalyptic number.

100043023 is a deficient number, since it is larger than the sum of its proper divisors (34025).

100043023 is an equidigital number, since it uses as much as digits as its factorization.

100043023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34024.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 100043023 is about 10002.1509186774. The cubic root of 100043023 is about 464.2254388429.

Adding to 100043023 its reverse (320340001), we get a palindrome (420383024).

The spelling of 100043023 in words is "one hundred million, forty-three thousand, twenty-three".