11320320331 has 4 divisors (see below), whose sum is σ = 11320654464. Its totient is φ = 11319986200.

The previous prime is 11320320287. The next prime is 11320320337. The reversal of 11320320331 is 13302302311.

11320320331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13302302311 = 6271 ⋅2121241.

It is a cyclic number.

It is not a de Polignac number, because 11320320331 - 2²¹ = 11318223179 is a prime.

It is a super-2 number, since 2×11320320331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11320320299 and 11320320308.

It is not an unprimeable number, because it can be changed into a prime (11320320337) 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 in 3 ways as a sum of consecutive naturals, for example, 109675 + ... + 186196.

It is an arithmetic number, because the mean of its divisors is an integer number (2830163616).

Almost surely, 2^11320320331 is an apocalyptic number.

11320320331 is a deficient number, since it is larger than the sum of its proper divisors (334133).

11320320331 is an equidigital number, since it uses as much as digits as its factorization.

11320320331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334132.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 11320320331 its reverse (13302302311), we get a palindrome (24622622642).

The spelling of 11320320331 in words is "eleven billion, three hundred twenty million, three hundred twenty thousand, three hundred thirty-one".