40431321221304 has 64 divisors (see below), whose sum is σ = 108985182445440. Its totient is φ = 12425363637120.

The previous prime is 40431321221293. The next prime is 40431321221329. The reversal of 40431321221304 is 40312212313404.

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, 78089962 + ... + 78606009.

It is an arithmetic number, because the mean of its divisors is an integer number (1702893475710).

Almost surely, 2^{40431321221304} is an apocalyptic number.

It is an amenable number.

40431321221304 is an abundant number, since it is smaller than the sum of its proper divisors (68553861224136).

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

40431321221304 is a wasteful number, since it uses less digits than its factorization.

40431321221304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156696820 (or 156696816 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 40431321221304 its reverse (40312212313404), we get a palindrome (80743533534708).

The spelling of 40431321221304 in words is "forty trillion, four hundred thirty-one billion, three hundred twenty-one million, two hundred twenty-one thousand, three hundred four".