11031230331012 has 96 divisors (see below), whose sum is σ = 27381441475584. Its totient is φ = 3449091254400.

The previous prime is 11031230330999. The next prime is 11031230331071. The reversal of 11031230331012 is 21013303213011.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11031230331012.

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, 4582963 + ... + 6562469.

It is an arithmetic number, because the mean of its divisors is an integer number (285223348704).

Almost surely, 2^{11031230331012} is an apocalyptic number.

11031230331012 is a gapful number since it is divisible by the number (12) 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 11031230331012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13690720737792).

11031230331012 is an abundant number, since it is smaller than the sum of its proper divisors (16350211144572).

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

11031230331012 is a wasteful number, since it uses less digits than its factorization.

11031230331012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1979929 (or 1979927 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 11031230331012 its reverse (21013303213011), we get a palindrome (32044533544023).

The spelling of 11031230331012 in words is "eleven trillion, thirty-one billion, two hundred thirty million, three hundred thirty-one thousand, twelve".