1313031320340 has 48 divisors (see below), whose sum is σ = 3691742873280. Its totient is φ = 348688811520.

The previous prime is 1313031320339. The next prime is 1313031320353. The reversal of 1313031320340 is 430231303131.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1313031320340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45387730 + ... + 45416649.

It is an arithmetic number, because the mean of its divisors is an integer number (76911309860).

Almost surely, 2^{1313031320340} is an apocalyptic number.

1313031320340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1313031320340 is an abundant number, since it is smaller than the sum of its proper divisors (2378711552940).

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

1313031320340 is a wasteful number, since it uses less digits than its factorization.

1313031320340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90804632 (or 90804630 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 1313031320340 its reverse (430231303131), we get a palindrome (1743262623471).

The spelling of 1313031320340 in words is "one trillion, three hundred thirteen billion, thirty-one million, three hundred twenty thousand, three hundred forty".