40313434240 has 64 divisors (see below), whose sum is σ = 96475043520. Its totient is φ = 16108518400.

The previous prime is 40313434201. The next prime is 40313434247. The reversal of 40313434240 is 4243431304.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 40313434199 and 40313434208.

It is not an unprimeable number, because it can be changed into a prime (40313434247) 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, 589005 + ... + 653875.

It is an arithmetic number, because the mean of its divisors is an integer number (1507422555).

Almost surely, 2^40313434240 is an apocalyptic number.

40313434240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40313434240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48237521760).

40313434240 is an abundant number, since it is smaller than the sum of its proper divisors (56161609280).

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

40313434240 is an equidigital number, since it uses as much as digits as its factorization.

40313434240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65861 (or 65849 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 40313434240 its reverse (4243431304), we get a palindrome (44556865544).

The spelling of 40313434240 in words is "forty billion, three hundred thirteen million, four hundred thirty-four thousand, two hundred forty".