1312321023163 has 2 divisors, whose sum is σ = 1312321023164. Its totient is φ = 1312321023162.

The previous prime is 1312321023149. The next prime is 1312321023187. The reversal of 1312321023163 is 3613201232131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312321023163 is a prime.

It is not a weakly prime, because it can be changed into another prime (1312321021163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656160511581 + 656160511582.

It is an arithmetic number, because the mean of its divisors is an integer number (656160511582).

Almost surely, 2^{1312321023163} is an apocalyptic number.

1312321023163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312321023163 is an equidigital number, since it uses as much as digits as its factorization.

1312321023163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 1312321023163 its reverse (3613201232131), we get a palindrome (4925522255294).

The spelling of 1312321023163 in words is "one trillion, three hundred twelve billion, three hundred twenty-one million, twenty-three thousand, one hundred sixty-three".