1031320231320 has 64 divisors (see below), whose sum is σ = 3275958388320. Its totient is φ = 258841155584.

The previous prime is 1031320231297. The next prime is 1031320231397. The reversal of 1031320231320 is 231320231301.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252772527 + ... + 252776606.

Almost surely, 2^{1031320231320} is an apocalyptic number.

1031320231320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031320231320 is an abundant number, since it is smaller than the sum of its proper divisors (2244638157000).

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

1031320231320 is a wasteful number, since it uses less digits than its factorization.

1031320231320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505549164 (or 505549160 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 1031320231320 its reverse (231320231301), we get a palindrome (1262640462621).

The spelling of 1031320231320 in words is "one trillion, thirty-one billion, three hundred twenty million, two hundred thirty-one thousand, three hundred twenty".