100423431042243 has 4 divisors (see below), whose sum is σ = 133897908056328. Its totient is φ = 66948954028160.

The previous prime is 100423431042229. The next prime is 100423431042247. The reversal of 100423431042243 is 342240134324001.

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 100423431042243 - 2¹⁴ = 100423431025859 is a prime.

It is a super-2 number, since 2×100423431042243² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100423431042247) 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, 16737238507038 + ... + 16737238507043.

It is an arithmetic number, because the mean of its divisors is an integer number (33474477014082).

Almost surely, 2^{100423431042243} is an apocalyptic number.

100423431042243 is a deficient number, since it is larger than the sum of its proper divisors (33474477014085).

100423431042243 is an equidigital number, since it uses as much as digits as its factorization.

100423431042243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33474477014084.

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 100423431042243 its reverse (342240134324001), we get a palindrome (442663565366244).

The spelling of 100423431042243 in words is "one hundred trillion, four hundred twenty-three billion, four hundred thirty-one million, forty-two thousand, two hundred forty-three".