1040311331320 has 64 divisors (see below), whose sum is σ = 2380724856000. Its totient is φ = 409018567680.

The previous prime is 1040311331249. The next prime is 1040311331329. The reversal of 1040311331320 is 231331130401.

It is a junction number, because it is equal to n+sod(n) for n = 1040311331291 and 1040311331300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040311331329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3383356 + ... + 3678004.

It is an arithmetic number, because the mean of its divisors is an integer number (37198825875).

Almost surely, 2^{1040311331320} is an apocalyptic number.

1040311331320 is a gapful number since it is divisible by the number (10) 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 1040311331320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1190362428000).

1040311331320 is an abundant number, since it is smaller than the sum of its proper divisors (1340413524680).

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

1040311331320 is a wasteful number, since it uses less digits than its factorization.

1040311331320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296168 (or 296164 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1040311331320 its reverse (231331130401), we get a palindrome (1271642461721).

The spelling of 1040311331320 in words is "one trillion, forty billion, three hundred eleven million, three hundred thirty-one thousand, three hundred twenty".