11031331000 has 64 divisors (see below), whose sum is σ = 25851384000. Its totient is φ = 4406025600.

The previous prime is 11031330941. The next prime is 11031331007. The reversal of 11031331000 is 13313011.

It is a happy number.

It is a super-2 number, since 2×11031331000² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11031331007) 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, 701221 + ... + 716779.

It is an arithmetic number, because the mean of its divisors is an integer number (403927875).

Almost surely, 2^11031331000 is an apocalyptic number.

11031331000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11031331000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12925692000).

11031331000 is an abundant number, since it is smaller than the sum of its proper divisors (14820053000).

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

11031331000 is a wasteful number, since it uses less digits than its factorization.

11031331000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16289 (or 16275 counting only the distinct ones).

The product of its (nonzero) digits is 27, while the sum is 13.

Adding to 11031331000 its reverse (13313011), we get a palindrome (11044644011).

The spelling of 11031331000 in words is "eleven billion, thirty-one million, three hundred thirty-one thousand".