1113203312 has 160 divisors (see below), whose sum is σ = 2628165120. Its totient is φ = 451630080.

The previous prime is 1113203303. The next prime is 1113203359. The reversal of 1113203312 is 2133023111.

It is a super-2 number, since 2×1113203312² = 2478443227695538688, which contains 22 as substring.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 3362987 + ... + 3363317.

It is an arithmetic number, because the mean of its divisors is an integer number (16426032).

Almost surely, 2^1113203312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1113203312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1314082560).

1113203312 is an abundant number, since it is smaller than the sum of its proper divisors (1514961808).

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

1113203312 is a wasteful number, since it uses less digits than its factorization.

1113203312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1113203312 is about 33364.7015871564. The cubic root of 1113203312 is about 1036.3938564996.

Adding to 1113203312 its reverse (2133023111), we get a palindrome (3246226423).

The spelling of 1113203312 in words is "one billion, one hundred thirteen million, two hundred three thousand, three hundred twelve".