1323640301311 has 4 divisors (see below), whose sum is σ = 1323803701624. Its totient is φ = 1323476901000.

The previous prime is 1323640301309. The next prime is 1323640301329. The reversal of 1323640301311 is 1131030463231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1323640301311 - 2¹ = 1323640301309 is a prime.

It is a super-3 number, since 3×1323640301311³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1323640301311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323640301381) 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 in 3 ways as a sum of consecutive naturals, for example, 81688005 + ... + 81704206.

It is an arithmetic number, because the mean of its divisors is an integer number (330950925406).

Almost surely, 2^{1323640301311} is an apocalyptic number.

1323640301311 is a deficient number, since it is larger than the sum of its proper divisors (163400313).

1323640301311 is an equidigital number, since it uses as much as digits as its factorization.

1323640301311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163400312.

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 1323640301311 its reverse (1131030463231), we get a palindrome (2454670764542).

The spelling of 1323640301311 in words is "one trillion, three hundred twenty-three billion, six hundred forty million, three hundred one thousand, three hundred eleven".