1123220312 has 16 divisors (see below), whose sum is σ = 2107698840. Its totient is φ = 561167296.

The previous prime is 1123220291. The next prime is 1123220353. The reversal of 1123220312 is 2130223211.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44453 + ... + 64980.

Almost surely, 2^1123220312 is an apocalyptic number.

It is an amenable number.

1123220312 is a deficient number, since it is larger than the sum of its proper divisors (984478528).

1123220312 is a wasteful number, since it uses less digits than its factorization.

1123220312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110722 (or 110718 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1123220312 is about 33514.4791396196. The cubic root of 1123220312 is about 1039.4931924143.

Adding to 1123220312 its reverse (2130223211), we get a palindrome (3253443523).

The spelling of 1123220312 in words is "one billion, one hundred twenty-three million, two hundred twenty thousand, three hundred twelve".