11331131020 has 48 divisors (see below), whose sum is σ = 26003109888. Its totient is φ = 4113344960.

The previous prime is 11331131017. The next prime is 11331131041. The reversal of 11331131020 is 2013113311.

It is a junction number, because it is equal to n+sod(n) for n = 11331130985 and 11331131003.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85269 + ... + 173011.

It is an arithmetic number, because the mean of its divisors is an integer number (541731456).

Almost surely, 2^11331131020 is an apocalyptic number.

11331131020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11331131020 is an abundant number, since it is smaller than the sum of its proper divisors (14671978868).

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

11331131020 is a wasteful number, since it uses less digits than its factorization.

11331131020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88350 (or 88348 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 11331131020 its reverse (2013113311), we get a palindrome (13344244331).

The spelling of 11331131020 in words is "eleven billion, three hundred thirty-one million, one hundred thirty-one thousand, twenty".