1311301323320 has 64 divisors (see below), whose sum is σ = 3124137146400. Its totient is φ = 493641953280.

The previous prime is 1311301323259. The next prime is 1311301323323. The reversal of 1311301323320 is 233231031131.

It is a super-2 number, since 2×1311301323320² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311301323323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19726940 + ... + 19793300.

Almost surely, 2^{1311301323320} is an apocalyptic number.

1311301323320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311301323320 is an abundant number, since it is smaller than the sum of its proper divisors (1812835823080).

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

1311301323320 is a wasteful number, since it uses less digits than its factorization.

1311301323320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95448 (or 95444 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 1311301323320 its reverse (233231031131), we get a palindrome (1544532354451).

The spelling of 1311301323320 in words is "one trillion, three hundred eleven billion, three hundred one million, three hundred twenty-three thousand, three hundred twenty".