11001320331 has 32 divisors (see below), whose sum is σ = 15298191360. Its totient is φ = 7024617600.

The previous prime is 11001320329. The next prime is 11001320333. The reversal of 11001320331 is 13302310011.

It is an interprime number because it is at equal distance from previous prime (11001320329) and next prime (11001320333).

It is not a de Polignac number, because 11001320331 - 2¹ = 11001320329 is a prime.

It is a super-2 number, since 2×11001320331² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11001320331.

It is not an unprimeable number, because it can be changed into a prime (11001320333) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3843841 + ... + 3846701.

It is an arithmetic number, because the mean of its divisors is an integer number (478068480).

Almost surely, 2^11001320331 is an apocalyptic number.

11001320331 is a deficient number, since it is larger than the sum of its proper divisors (4296871029).

11001320331 is a wasteful number, since it uses less digits than its factorization.

11001320331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3307.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 11001320331 its reverse (13302310011), we get a palindrome (24303630342).

The spelling of 11001320331 in words is "eleven billion, one million, three hundred twenty thousand, three hundred thirty-one".