1313220013187 has 2 divisors, whose sum is σ = 1313220013188. Its totient is φ = 1313220013186.

The previous prime is 1313220013169. The next prime is 1313220013211. The reversal of 1313220013187 is 7813100223131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1313220013187 - 2²⁰ = 1313218964611 is a prime.

It is not a weakly prime, because it can be changed into another prime (1313220013387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656610006593 + 656610006594.

It is an arithmetic number, because the mean of its divisors is an integer number (656610006594).

Almost surely, 2^{1313220013187} is an apocalyptic number.

1313220013187 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313220013187 is an equidigital number, since it uses as much as digits as its factorization.

1313220013187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The spelling of 1313220013187 in words is "one trillion, three hundred thirteen billion, two hundred twenty million, thirteen thousand, one hundred eighty-seven".