11031223312 has 10 divisors (see below), whose sum is σ = 21372995198. Its totient is φ = 5515611648.

The previous prime is 11031223297. The next prime is 11031223321. The reversal of 11031223312 is 21332213011.

It can be written as a sum of positive squares in only one way, i.e., 11019960576 + 11262736 = 104976^2 + 3356^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11031223312.

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 as a sum of consecutive naturals, namely, 344725713 + ... + 344725744.

Almost surely, 2^11031223312 is an apocalyptic number.

It is an amenable number.

11031223312 is a deficient number, since it is larger than the sum of its proper divisors (10341771886).

11031223312 is an equidigital number, since it uses as much as digits as its factorization.

11031223312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689451465 (or 689451459 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 11031223312 its reverse (21332213011), we get a palindrome (32363436323).

The spelling of 11031223312 in words is "eleven billion, thirty-one million, two hundred twenty-three thousand, three hundred twelve".