11311231310220 has 96 divisors (see below), whose sum is σ = 33535768766976. Its totient is φ = 2838787660800.

The previous prime is 11311231310207. The next prime is 11311231310251. The reversal of 11311231310220 is 2201313211311.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28044585 + ... + 28445055.

It is an arithmetic number, because the mean of its divisors is an integer number (349330924656).

Almost surely, 2^{11311231310220} is an apocalyptic number.

11311231310220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11311231310220 is an abundant number, since it is smaller than the sum of its proper divisors (22224537456756).

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

11311231310220 is a wasteful number, since it uses less digits than its factorization.

11311231310220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428191 (or 428189 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 11311231310220 its reverse (2201313211311), we get a palindrome (13512544521531).

The spelling of 11311231310220 in words is "eleven trillion, three hundred eleven billion, two hundred thirty-one million, three hundred ten thousand, two hundred twenty".