113503020 has 48 divisors (see below), whose sum is σ = 323205120. Its totient is φ = 29753536.

The previous prime is 113503001. The next prime is 113503021. The reversal of 113503020 is 20305311.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (113503021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12492 + ... + 19571.

It is an arithmetic number, because the mean of its divisors is an integer number (6733440).

Almost surely, 2^113503020 is an apocalyptic number.

113503020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113503020 is an abundant number, since it is smaller than the sum of its proper divisors (209702100).

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

113503020 is a wasteful number, since it uses less digits than its factorization.

113503020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32134 (or 32132 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 113503020 is about 10653.7796110113. The cubic root of 113503020 is about 484.1751238875.

Adding to 113503020 its reverse (20305311), we get a palindrome (133808331).

The spelling of 113503020 in words is "one hundred thirteen million, five hundred three thousand, twenty".