113212988 has 12 divisors (see below), whose sum is σ = 226426032. Its totient is φ = 48519840.

The previous prime is 113212987. The next prime is 113212991. The reversal of 113212988 is 889212311.

113212988 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113212987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2021633 + ... + 2021688.

It is an arithmetic number, because the mean of its divisors is an integer number (18868836).

Almost surely, 2^113212988 is an apocalyptic number.

It is an amenable number.

113212988 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

113212988 is a wasteful number, since it uses less digits than its factorization.

113212988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4043332 (or 4043330 counting only the distinct ones).

The product of its digits is 6912, while the sum is 35.

The square root of 113212988 is about 10640.1592093352. The cubic root of 113212988 is about 483.7623711134.

The spelling of 113212988 in words is "one hundred thirteen million, two hundred twelve thousand, nine hundred eighty-eight".