40221431020 has 12 divisors (see below), whose sum is σ = 84465005184. Its totient is φ = 16088572400.

The previous prime is 40221431017. The next prime is 40221431023. The reversal of 40221431020 is 2013412204.

40221431020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40221431017) and next prime (40221431023).

It is not an unprimeable number, because it can be changed into a prime (40221431023) 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, 1005535756 + ... + 1005535795.

It is an arithmetic number, because the mean of its divisors is an integer number (7038750432).

Almost surely, 2^40221431020 is an apocalyptic number.

It is an amenable number.

40221431020 is an abundant number, since it is smaller than the sum of its proper divisors (44243574164).

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

40221431020 is a wasteful number, since it uses less digits than its factorization.

40221431020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011071560 (or 2011071558 counting only the distinct ones).

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

Adding to 40221431020 its reverse (2013412204), we get a palindrome (42234843224).

The spelling of 40221431020 in words is "forty billion, two hundred twenty-one million, four hundred thirty-one thousand, twenty".