1311022113451 has 2 divisors, whose sum is σ = 1311022113452. Its totient is φ = 1311022113450.

The previous prime is 1311022113449. The next prime is 1311022113463. The reversal of 1311022113451 is 1543112201131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1311022113451 - 2¹ = 1311022113449 is a prime.

Together with 1311022113449, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1311022113851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655511056725 + 655511056726.

It is an arithmetic number, because the mean of its divisors is an integer number (655511056726).

Almost surely, 2^{1311022113451} is an apocalyptic number.

1311022113451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311022113451 is an equidigital number, since it uses as much as digits as its factorization.

1311022113451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 25.

Adding to 1311022113451 its reverse (1543112201131), we get a palindrome (2854134314582).

The spelling of 1311022113451 in words is "one trillion, three hundred eleven billion, twenty-two million, one hundred thirteen thousand, four hundred fifty-one".