40431042323 has 4 divisors (see below), whose sum is σ = 46206905520. Its totient is φ = 34655179128.

The previous prime is 40431042263. The next prime is 40431042329. The reversal of 40431042323 is 32324013404.

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 40431042323 - 2²² = 40426848019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40431042292 and 40431042301.

It is not an unprimeable number, because it can be changed into a prime (40431042329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2887931588 + ... + 2887931601.

It is an arithmetic number, because the mean of its divisors is an integer number (11551726380).

Almost surely, 2^40431042323 is an apocalyptic number.

40431042323 is a deficient number, since it is larger than the sum of its proper divisors (5775863197).

40431042323 is an equidigital number, since it uses as much as digits as its factorization.

40431042323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5775863196.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 40431042323 its reverse (32324013404), we get a palindrome (72755055727).

The spelling of 40431042323 in words is "forty billion, four hundred thirty-one million, forty-two thousand, three hundred twenty-three".