100403423 has 4 divisors (see below), whose sum is σ = 103865640. Its totient is φ = 96941208.

The previous prime is 100403419. The next prime is 100403431. The reversal of 100403423 is 324304001.

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 100403423 - 2² = 100403419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100403123) 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, 1731065 + ... + 1731122.

It is an arithmetic number, because the mean of its divisors is an integer number (25966410).

Almost surely, 2^100403423 is an apocalyptic number.

100403423 is a deficient number, since it is larger than the sum of its proper divisors (3462217).

100403423 is an equidigital number, since it uses as much as digits as its factorization.

100403423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3462216.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 100403423 is about 10020.1508471679. The cubic root of 100403423 is about 464.7822204469.

Adding to 100403423 its reverse (324304001), we get a palindrome (424707424).

The spelling of 100403423 in words is "one hundred million, four hundred three thousand, four hundred twenty-three".