1113211312 has 20 divisors (see below), whose sum is σ = 2169767376. Its totient is φ = 553271360.

The previous prime is 1113211279. The next prime is 1113211369. The reversal of 1113211312 is 2131123111.

It is a happy number.

It is a super-2 number, since 2×1113211312² = 2478478850329522688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

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 3 ways as a sum of consecutive naturals, for example, 205639 + ... + 210982.

Almost surely, 2^1113211312 is an apocalyptic number.

It is an amenable number.

1113211312 is a deficient number, since it is larger than the sum of its proper divisors (1056556064).

1113211312 is a wasteful number, since it uses less digits than its factorization.

1113211312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416796 (or 416790 counting only the distinct ones).

The product of its digits is 36, while the sum is 16.

The square root of 1113211312 is about 33364.8214741215. The cubic root of 1113211312 is about 1036.3963391641.

Adding to 1113211312 its reverse (2131123111), we get a palindrome (3244334423).

The spelling of 1113211312 in words is "one billion, one hundred thirteen million, two hundred eleven thousand, three hundred twelve".