40531134320 has 40 divisors (see below), whose sum is σ = 96239893824. Its totient is φ = 15867506432.

The previous prime is 40531134283. The next prime is 40531134383. The reversal of 40531134320 is 2343113504.

40531134320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 40531134320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5386019 + ... + 5393538.

Almost surely, 2^40531134320 is an apocalyptic number.

40531134320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40531134320 is an abundant number, since it is smaller than the sum of its proper divisors (55708759504).

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

40531134320 is a wasteful number, since it uses less digits than its factorization.

40531134320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10779617 (or 10779611 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 40531134320 its reverse (2343113504), we get a palindrome (42874247824).

The spelling of 40531134320 in words is "forty billion, five hundred thirty-one million, one hundred thirty-four thousand, three hundred twenty".