40405103500231 has 4 divisors (see below), whose sum is σ = 42531687895000. Its totient is φ = 38278519105464.

The previous prime is 40405103500217. The next prime is 40405103500249. The reversal of 40405103500231 is 13200530150404.

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 40405103500231 - 2⁵ = 40405103500199 is a prime.

It is a super-2 number, since 2×40405103500231² (a number of 28 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 40405103500231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40405103506231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1063292197356 + ... + 1063292197393.

It is an arithmetic number, because the mean of its divisors is an integer number (10632921973750).

Almost surely, 2^{40405103500231} is an apocalyptic number.

40405103500231 is a deficient number, since it is larger than the sum of its proper divisors (2126584394769).

40405103500231 is a wasteful number, since it uses less digits than its factorization.

40405103500231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2126584394768.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 40405103500231 its reverse (13200530150404), we get a palindrome (53605633650635).

The spelling of 40405103500231 in words is "forty trillion, four hundred five billion, one hundred three million, five hundred thousand, two hundred thirty-one".