40031224021 has 8 divisors (see below), whose sum is σ = 40082803488. Its totient is φ = 39979674000.

The previous prime is 40031224003. The next prime is 40031224043. The reversal of 40031224021 is 12042213004.

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 40031224021 - 2⁹ = 40031223509 is a prime.

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 40031224021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40031224921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4021911 + ... + 4031851.

It is an arithmetic number, because the mean of its divisors is an integer number (5010350436).

Almost surely, 2^40031224021 is an apocalyptic number.

It is an amenable number.

40031224021 is a deficient number, since it is larger than the sum of its proper divisors (51579467).

40031224021 is a wasteful number, since it uses less digits than its factorization.

40031224021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14723.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 40031224021 its reverse (12042213004), we get a palindrome (52073437025).

The spelling of 40031224021 in words is "forty billion, thirty-one million, two hundred twenty-four thousand, twenty-one".