40304431232020 has 24 divisors (see below), whose sum is σ = 84639515726304. Its totient is φ = 16121732466336.

The previous prime is 40304431231931. The next prime is 40304431232041. The reversal of 40304431232020 is 2023213440304.

It is a self number, because there is not a number n which added to its sum of digits gives 40304431232020.

It is a congruent number.

It is an unprimeable number.

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, 6554979 + ... + 11116501.

It is an arithmetic number, because the mean of its divisors is an integer number (3526646488596).

Almost surely, 2^{40304431232020} is an apocalyptic number.

It is an amenable number.

40304431232020 is an abundant number, since it is smaller than the sum of its proper divisors (44335084494284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40304431232020 is a wasteful number, since it uses less digits than its factorization.

40304431232020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5003319 (or 5003317 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 40304431232020 its reverse (2023213440304), we get a palindrome (42327644672324).

The spelling of 40304431232020 in words is "forty trillion, three hundred four billion, four hundred thirty-one million, two hundred thirty-two thousand, twenty".