113503212 has 18 divisors (see below), whose sum is σ = 286910988. Its totient is φ = 37834392.

The previous prime is 113503151. The next prime is 113503223. The reversal of 113503212 is 212305311.

It is a tau number, because it is divible by the number of its divisors (18).

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

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 5 ways as a sum of consecutive naturals, for example, 1576398 + ... + 1576469.

Almost surely, 2^113503212 is an apocalyptic number.

113503212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

113503212 is an abundant number, since it is smaller than the sum of its proper divisors (173407776).

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

113503212 is a wasteful number, since it uses less digits than its factorization.

113503212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3152877 (or 3152872 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 113503212 is about 10653.7886218941. The cubic root of 113503212 is about 484.1753968951.

Adding to 113503212 its reverse (212305311), we get a palindrome (325808523).

The spelling of 113503212 in words is "one hundred thirteen million, five hundred three thousand, two hundred twelve".