113312220 has 48 divisors (see below), whose sum is σ = 362600448. Its totient is φ = 25899840.

The previous prime is 113312201. The next prime is 113312261. The reversal of 113312220 is 22213311.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 113312220.

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 15 ways as a sum of consecutive naturals, for example, 134476 + ... + 135315.

It is an arithmetic number, because the mean of its divisors is an integer number (7554176).

Almost surely, 2^113312220 is an apocalyptic number.

113312220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113312220 is an abundant number, since it is smaller than the sum of its proper divisors (249288228).

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

113312220 is a wasteful number, since it uses less digits than its factorization.

113312220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269810 (or 269808 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 113312220 is about 10644.8212760948. The cubic root of 113312220 is about 483.9036702399.

Adding to 113312220 its reverse (22213311), we get a palindrome (135525531).

The spelling of 113312220 in words is "one hundred thirteen million, three hundred twelve thousand, two hundred twenty".