1131312320320 has 112 divisors (see below), whose sum is σ = 3315615424128. Its totient is φ = 358041692160.

The previous prime is 1131312320293. The next prime is 1131312320321. The reversal of 1131312320320 is 230232131311.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×1131312320320² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1131312320291 and 1131312320300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131312320321) 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, 19395886 + ... + 19454125.

It is an arithmetic number, because the mean of its divisors is an integer number (29603709144).

Almost surely, 2^{1131312320320} is an apocalyptic number.

1131312320320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131312320320 is an abundant number, since it is smaller than the sum of its proper divisors (2184303103808).

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

1131312320320 is a wasteful number, since it uses less digits than its factorization.

1131312320320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38850048 (or 38850038 counting only the distinct ones).

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

Adding to 1131312320320 its reverse (230232131311), we get a palindrome (1361544451631).

The spelling of 1131312320320 in words is "one trillion, one hundred thirty-one billion, three hundred twelve million, three hundred twenty thousand, three hundred twenty".