40431012020 has 48 divisors (see below), whose sum is σ = 97232220288. Its totient is φ = 13833805440.

The previous prime is 40431012007. The next prime is 40431012031. The reversal of 40431012020 is 2021013404.

It is a super-2 number, since 2×40431012020² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40431012020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225347 + ... + 362826.

It is an arithmetic number, because the mean of its divisors is an integer number (2025671256).

Almost surely, 2^40431012020 is an apocalyptic number.

It is an amenable number.

40431012020 is an abundant number, since it is smaller than the sum of its proper divisors (56801208268).

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

40431012020 is a wasteful number, since it uses less digits than its factorization.

40431012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588680 (or 588678 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 40431012020 its reverse (2021013404), we get a palindrome (42452025424).

The spelling of 40431012020 in words is "forty billion, four hundred thirty-one million, twelve thousand, twenty".