1311311001277 has 2 divisors, whose sum is σ = 1311311001278. Its totient is φ = 1311311001276.

The previous prime is 1311311001241. The next prime is 1311311001379. The reversal of 1311311001277 is 7721001131131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1274164606521 + 37146394756 = 1128789^2 + 192734^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311311001277 - 2²⁷ = 1311176783549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311311001877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655655500638 + 655655500639.

It is an arithmetic number, because the mean of its divisors is an integer number (655655500639).

Almost surely, 2^{1311311001277} is an apocalyptic number.

It is an amenable number.

1311311001277 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311311001277 is an equidigital number, since it uses as much as digits as its factorization.

1311311001277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 882, while the sum is 28.

The spelling of 1311311001277 in words is "one trillion, three hundred eleven billion, three hundred eleven million, one thousand, two hundred seventy-seven".