11331131312020 has 48 divisors (see below), whose sum is σ = 25677143856000. Its totient is φ = 4175417909376.

The previous prime is 11331131311901. The next prime is 11331131312027. The reversal of 11331131312020 is 2021313113311.

It is a junction number, because it is equal to n+sod(n) for n = 11331131311982 and 11331131312000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11331131312027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43538872 + ... + 43798351.

It is an arithmetic number, because the mean of its divisors is an integer number (534940497000).

Almost surely, 2^{11331131312020} is an apocalyptic number.

11331131312020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11331131312020 is an abundant number, since it is smaller than the sum of its proper divisors (14346012543980).

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

11331131312020 is a wasteful number, since it uses less digits than its factorization.

11331131312020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87337744 (or 87337742 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 11331131312020 its reverse (2021313113311), we get a palindrome (13352444425331).

The spelling of 11331131312020 in words is "eleven trillion, three hundred thirty-one billion, one hundred thirty-one million, three hundred twelve thousand, twenty".