1313076436381 has 2 divisors, whose sum is σ = 1313076436382. Its totient is φ = 1313076436380.

The previous prime is 1313076436379. The next prime is 1313076436387. The reversal of 1313076436381 is 1836346703131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1007897531481 + 305178904900 = 1003941^2 + 552430^2 .

It is an emirp because it is prime and its reverse (1836346703131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1313076436381 - 2¹ = 1313076436379 is a prime.

It is a super-2 number, since 2×1313076436381² (a number of 25 digits) contains 22 as substring.

Together with 1313076436379, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313076436387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656538218190 + 656538218191.

It is an arithmetic number, because the mean of its divisors is an integer number (656538218191).

Almost surely, 2^{1313076436381} is an apocalyptic number.

It is an amenable number.

1313076436381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313076436381 is an equidigital number, since it uses as much as digits as its factorization.

1313076436381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 46.

The spelling of 1313076436381 in words is "one trillion, three hundred thirteen billion, seventy-six million, four hundred thirty-six thousand, three hundred eighty-one".