1113203412 has 42 divisors (see below), whose sum is σ = 2920830458. Its totient is φ = 371066832.

The previous prime is 1113203389. The next prime is 1113203417. The reversal of 1113203412 is 2143023111.

1113203412 is a `hidden beast` number, since 1 + 1 + 1 + 320 + 341 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1099320336 + 13883076 = 33156^2 + 3726^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113203417) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 187963 + ... + 193794.

Almost surely, 2^1113203412 is an apocalyptic number.

1113203412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1113203412 is an abundant number, since it is smaller than the sum of its proper divisors (1807627046).

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

1113203412 is an equidigital number, since it uses as much as digits as its factorization.

1113203412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381779 (or 381762 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1113203412 is about 33364.7030857462. The cubic root of 1113203412 is about 1036.3938875330.

Adding to 1113203412 its reverse (2143023111), we get a palindrome (3256226523).

The spelling of 1113203412 in words is "one billion, one hundred thirteen million, two hundred three thousand, four hundred twelve".