11223031968 has 36 divisors (see below), whose sum is σ = 31915497978. Its totient is φ = 3741010560.

The previous prime is 11223031957. The next prime is 11223031969. The reversal of 11223031968 is 86913032211.

It can be written as a sum of positive squares in only one way, i.e., 6160994064 + 5062037904 = 78492^2 + 71148^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (11223031969) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19484143 + ... + 19484718.

Almost surely, 2^11223031968 is an apocalyptic number.

11223031968 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11223031968 is an abundant number, since it is smaller than the sum of its proper divisors (20692466010).

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

11223031968 is a wasteful number, since it uses less digits than its factorization.

11223031968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38968877 (or 38968866 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The spelling of 11223031968 in words is "eleven billion, two hundred twenty-three million, thirty-one thousand, nine hundred sixty-eight".