40318687631 has 8 divisors (see below), whose sum is σ = 40672701600. Its totient is φ = 39965786208.

The previous prime is 40318687601. The next prime is 40318687691. The reversal of 40318687631 is 13678681304.

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

It is a cyclic number.

It is not a de Polignac number, because 40318687631 - 2⁶ = 40318687567 is a prime.

It is a super-2 number, since 2×40318687631² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40318687601) 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 7 ways as a sum of consecutive naturals, for example, 205256 + ... + 350381.

It is an arithmetic number, because the mean of its divisors is an integer number (5084087700).

Almost surely, 2^40318687631 is an apocalyptic number.

40318687631 is a deficient number, since it is larger than the sum of its proper divisors (354013969).

40318687631 is a wasteful number, since it uses less digits than its factorization.

40318687631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556273.

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 40318687631 in words is "forty billion, three hundred eighteen million, six hundred eighty-seven thousand, six hundred thirty-one".