40431432212340 has 72 divisors (see below), whose sum is σ = 122586188584608. Its totient is φ = 9952352542080.

The previous prime is 40431432212293. The next prime is 40431432212359. The reversal of 40431432212340 is 4321223413404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1993650226 + ... + 1993670505.

It is an arithmetic number, because the mean of its divisors is an integer number (1702585952564).

Almost surely, 2^{40431432212340} is an apocalyptic number.

It is an amenable number.

40431432212340 is an abundant number, since it is smaller than the sum of its proper divisors (82154756372268).

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

40431432212340 is a wasteful number, since it uses less digits than its factorization.

40431432212340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3987320769 (or 3987320754 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 40431432212340 its reverse (4321223413404), we get a palindrome (44752655625744).

The spelling of 40431432212340 in words is "forty trillion, four hundred thirty-one billion, four hundred thirty-two million, two hundred twelve thousand, three hundred forty".