11031331012 has 36 divisors (see below), whose sum is σ = 21246814596. Its totient is φ = 5007899520.

The previous prime is 11031331009. The next prime is 11031331027. The reversal of 11031331012 is 21013313011.

It can be written as a sum of positive squares in 6 ways, for example, as 7323251776 + 3708079236 = 85576^2 + 60894^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92523 + ... + 174994.

Almost surely, 2^11031331012 is an apocalyptic number.

It is an amenable number.

11031331012 is a deficient number, since it is larger than the sum of its proper divisors (10215483584).

11031331012 is a wasteful number, since it uses less digits than its factorization.

11031331012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267608 (or 267593 counting only the distinct ones).

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

Adding to 11031331012 its reverse (21013313011), we get a palindrome (32044644023).

The spelling of 11031331012 in words is "eleven billion, thirty-one million, three hundred thirty-one thousand, twelve".