1320312231313 has 16 divisors (see below), whose sum is σ = 1336108213440. Its totient is φ = 1304613273600.

The previous prime is 1320312231289. The next prime is 1320312231361. The reversal of 1320312231313 is 3131322130231.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320312231313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320312234313) 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, 33929598 + ... + 33968488.

It is an arithmetic number, because the mean of its divisors is an integer number (83506763340).

Almost surely, 2^{1320312231313} is an apocalyptic number.

It is an amenable number.

1320312231313 is a deficient number, since it is larger than the sum of its proper divisors (15795982127).

1320312231313 is a wasteful number, since it uses less digits than its factorization.

1320312231313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40128.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1320312231313 its reverse (3131322130231), we get a palindrome (4451634361544).

The spelling of 1320312231313 in words is "one trillion, three hundred twenty billion, three hundred twelve million, two hundred thirty-one thousand, three hundred thirteen".