113443220 has 24 divisors (see below), whose sum is σ = 259888608. Its totient is φ = 41252000.

The previous prime is 113443217. The next prime is 113443223. The reversal of 113443220 is 22344311.

It is an interprime number because it is at equal distance from previous prime (113443217) and next prime (113443223).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 113443192 and 113443201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113443223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257606 + ... + 258045.

It is an arithmetic number, because the mean of its divisors is an integer number (10828692).

Almost surely, 2^113443220 is an apocalyptic number.

113443220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113443220 is an abundant number, since it is smaller than the sum of its proper divisors (146445388).

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

113443220 is a wasteful number, since it uses less digits than its factorization.

113443220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515671 (or 515669 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 113443220 is about 10650.9727255308. The cubic root of 113443220 is about 484.0900784008.

Adding to 113443220 its reverse (22344311), we get a palindrome (135787531).

The spelling of 113443220 in words is "one hundred thirteen million, four hundred forty-three thousand, two hundred twenty".