11311210320 has 40 divisors (see below), whose sum is σ = 35064752736. Its totient is φ = 3016322688.

The previous prime is 11311210279. The next prime is 11311210357. The reversal of 11311210320 is 2301211311.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 11311210320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23564782 + ... + 23565261.

Almost surely, 2^11311210320 is an apocalyptic number.

11311210320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11311210320 is an abundant number, since it is smaller than the sum of its proper divisors (23753542416).

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

11311210320 is a wasteful number, since it uses less digits than its factorization.

11311210320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47130059 (or 47130053 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 11311210320 its reverse (2301211311), we get a palindrome (13612421631).

Subtracting from 11311210320 its reverse (2301211311), we obtain a palindrome (9009999009).

The spelling of 11311210320 in words is "eleven billion, three hundred eleven million, two hundred ten thousand, three hundred twenty".