1310571488581 has 2 divisors, whose sum is σ = 1310571488582. Its totient is φ = 1310571488580.

The previous prime is 1310571488539. The next prime is 1310571488617. The reversal of 1310571488581 is 1858841750131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 982162263681 + 328409224900 = 991041^2 + 573070^2 .

It is a cyclic number.

It is not a de Polignac number, because 1310571488581 - 2⁹ = 1310571488069 is a prime.

It is a super-2 number, since 2×1310571488581² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1310571488881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655285744290 + 655285744291.

It is an arithmetic number, because the mean of its divisors is an integer number (655285744291).

Almost surely, 2^{1310571488581} is an apocalyptic number.

It is an amenable number.

1310571488581 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310571488581 is an equidigital number, since it uses as much as digits as its factorization.

1310571488581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1075200, while the sum is 52.

The spelling of 1310571488581 in words is "one trillion, three hundred ten billion, five hundred seventy-one million, four hundred eighty-eight thousand, five hundred eighty-one".