1113943212 has 96 divisors (see below), whose sum is σ = 2993500160. Its totient is φ = 357851520.

The previous prime is 1113943189. The next prime is 1113943277. The reversal of 1113943212 is 2123493111.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1047393 + ... + 1048455.

Almost surely, 2^1113943212 is an apocalyptic number.

1113943212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1113943212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1496750080).

1113943212 is an abundant number, since it is smaller than the sum of its proper divisors (1879556948).

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

1113943212 is a wasteful number, since it uses less digits than its factorization.

1113943212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420 (or 1412 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 1113943212 is about 33375.7878109267. The cubic root of 1113943212 is about 1036.6234216282.

The spelling of 1113943212 in words is "one billion, one hundred thirteen million, nine hundred forty-three thousand, two hundred twelve".