11311010320 has 20 divisors (see below), whose sum is σ = 26298099180. Its totient is φ = 4524404096.

The previous prime is 11311010309. The next prime is 11311010323. The reversal of 11311010320 is 2301011311.

It can be written as a sum of positive squares in 2 ways, for example, as 4500799744 + 6810210576 = 67088^2 + 82524^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 11311010320.

It is not an unprimeable number, because it can be changed into a prime (11311010323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70693735 + ... + 70693894.

It is an arithmetic number, because the mean of its divisors is an integer number (1314904959).

Almost surely, 2^11311010320 is an apocalyptic number.

11311010320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11311010320 is an abundant number, since it is smaller than the sum of its proper divisors (14987088860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11311010320 is a wasteful number, since it uses less digits than its factorization.

11311010320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141387642 (or 141387636 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 11311010320 its reverse (2301011311), we get a palindrome (13612021631).

Subtracting from 11311010320 its reverse (2301011311), we obtain a palindrome (9009999009).

The spelling of 11311010320 in words is "eleven billion, three hundred eleven million, ten thousand, three hundred twenty".