40311313103440 has 40 divisors (see below), whose sum is σ = 93748128572808. Its totient is φ = 16120340190720.

The previous prime is 40311313103431. The next prime is 40311313103447. The reversal of 40311313103440 is 4430131311304.

It can be written as a sum of positive squares in 4 ways, for example, as 7288315297344 + 33022997806096 = 2699688^2 + 5746564^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 40311313103399 and 40311313103408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40311313103447) 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, 65081251 + ... + 65697730.

Almost surely, 2^{40311313103440} is an apocalyptic number.

40311313103440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40311313103440 is an abundant number, since it is smaller than the sum of its proper divisors (53436815469368).

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

40311313103440 is a wasteful number, since it uses less digits than its factorization.

40311313103440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130782847 (or 130782841 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 40311313103440 its reverse (4430131311304), we get a palindrome (44741444414744).

The spelling of 40311313103440 in words is "forty trillion, three hundred eleven billion, three hundred thirteen million, one hundred three thousand, four hundred forty".