1313181271 has 2 divisors, whose sum is σ = 1313181272. Its totient is φ = 1313181270.

The previous prime is 1313181229. The next prime is 1313181293. The reversal of 1313181271 is 1721813131.

It is a strong prime.

It is an emirp because it is prime and its reverse (1721813131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1313181271 - 2¹¹ = 1313179223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313181671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656590635 + 656590636.

It is an arithmetic number, because the mean of its divisors is an integer number (656590636).

Almost surely, 2^1313181271 is an apocalyptic number.

1313181271 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313181271 is an equidigital number, since it uses as much as digits as its factorization.

1313181271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 28.

The square root of 1313181271 is about 36237.8430787485. The cubic root of 1313181271 is about 1095.0691896259.

The spelling of 1313181271 in words is "one billion, three hundred thirteen million, one hundred eighty-one thousand, two hundred seventy-one".