40534123231 has 8 divisors (see below), whose sum is σ = 46774467584. Its totient is φ = 34406217720.

The previous prime is 40534123229. The next prime is 40534123241. The reversal of 40534123231 is 13232143504.

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 40534123231 - 2¹ = 40534123229 is a prime.

It is a super-2 number, since 2×40534123231² (a number of 22 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 40534123231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40534123241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28108935 + ... + 28110376.

It is an arithmetic number, because the mean of its divisors is an integer number (5846808448).

Almost surely, 2^40534123231 is an apocalyptic number.

40534123231 is a deficient number, since it is larger than the sum of its proper divisors (6240344353).

40534123231 is a wasteful number, since it uses less digits than its factorization.

40534123231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56219421.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 40534123231 its reverse (13232143504), we get a palindrome (53766266735).

The spelling of 40534123231 in words is "forty billion, five hundred thirty-four million, one hundred twenty-three thousand, two hundred thirty-one".