113383220 has 18 divisors (see below), whose sum is σ = 238204806. Its totient is φ = 45334240.

The previous prime is 113383177. The next prime is 113383297. The reversal of 113383220 is 22383311.

It can be written as a sum of positive squares in 3 ways, for example, as 20106256 + 93276964 = 4484^2 + 9658^2 .

It is a super-3 number, since 3×113383220³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46430 + ... + 48810.

Almost surely, 2^113383220 is an apocalyptic number.

113383220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113383220 is an abundant number, since it is smaller than the sum of its proper divisors (124821586).

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

113383220 is an frugal number, since it uses more digits than its factorization.

113383220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4771 (or 2388 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 113383220 is about 10648.1557088540. The cubic root of 113383220 is about 484.0047184386.

Subtracting from 113383220 its reverse (22383311), we obtain a palindrome (90999909).

The spelling of 113383220 in words is "one hundred thirteen million, three hundred eighty-three thousand, two hundred twenty".