243023123431 has 8 divisors (see below), whose sum is σ = 265126742928. Its totient is φ = 220921272000.

The previous prime is 243023123419. The next prime is 243023123479. The reversal of 243023123431 is 134321320342.

It is a happy number.

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

It is not a de Polignac number, because 243023123431 - 2⁷ = 243023123303 is a prime.

It is a super-2 number, since 2×243023123431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243023123431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243023123731) 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, 145990 + ... + 712291.

It is an arithmetic number, because the mean of its divisors is an integer number (33140842866).

Almost surely, 2^243023123431 is an apocalyptic number.

243023123431 is a deficient number, since it is larger than the sum of its proper divisors (22103619497).

243023123431 is a wasteful number, since it uses less digits than its factorization.

243023123431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884033.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 243023123431 its reverse (134321320342), we get a palindrome (377344443773).

The spelling of 243023123431 in words is "two hundred forty-three billion, twenty-three million, one hundred twenty-three thousand, four hundred thirty-one".