1320344233451 has 2 divisors, whose sum is σ = 1320344233452. Its totient is φ = 1320344233450.

The previous prime is 1320344233409. The next prime is 1320344233463. The reversal of 1320344233451 is 1543324430231.

It is a strong prime.

It is an emirp because it is prime and its reverse (1543324430231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1320344233451 - 2³⁴ = 1303164364267 is a prime.

It is not a weakly prime, because it can be changed into another prime (1320344233751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660172116725 + 660172116726.

It is an arithmetic number, because the mean of its divisors is an integer number (660172116726).

Almost surely, 2^{1320344233451} is an apocalyptic number.

1320344233451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320344233451 is an equidigital number, since it uses as much as digits as its factorization.

1320344233451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 35.

Adding to 1320344233451 its reverse (1543324430231), we get a palindrome (2863668663682).

The spelling of 1320344233451 in words is "one trillion, three hundred twenty billion, three hundred forty-four million, two hundred thirty-three thousand, four hundred fifty-one".