40031105623 has 4 divisors (see below), whose sum is σ = 42385876560. Its totient is φ = 37676334688.

The previous prime is 40031105581. The next prime is 40031105669. The reversal of 40031105623 is 32650113004.

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 40031105623 - 2³³ = 31441171031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40031105683) 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, 1177385443 + ... + 1177385476.

It is an arithmetic number, because the mean of its divisors is an integer number (10596469140).

Almost surely, 2^40031105623 is an apocalyptic number.

40031105623 is a deficient number, since it is larger than the sum of its proper divisors (2354770937).

40031105623 is a wasteful number, since it uses less digits than its factorization.

40031105623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2354770936.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 40031105623 its reverse (32650113004), we get a palindrome (72681218627).

The spelling of 40031105623 in words is "forty billion, thirty-one million, one hundred five thousand, six hundred twenty-three".