113210020 has 144 divisors (see below), whose sum is σ = 307810944. Its totient is φ = 34214400.

The previous prime is 113210017. The next prime is 113210023. The reversal of 113210020 is 20012311.

It is an interprime number because it is at equal distance from previous prime (113210017) and next prime (113210023).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 113209979 and 113210006.

It is not an unprimeable number, because it can be changed into a prime (113210023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 694459 + ... + 694621.

It is an arithmetic number, because the mean of its divisors is an integer number (2137576).

Almost surely, 2^113210020 is an apocalyptic number.

113210020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 113210020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153905472).

113210020 is an abundant number, since it is smaller than the sum of its proper divisors (194600924).

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

113210020 is a wasteful number, since it uses less digits than its factorization.

113210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 113210020 is about 10640.0197368238. The cubic root of 113210020 is about 483.7581436265.

Adding to 113210020 its reverse (20012311), we get a palindrome (133222331).

The spelling of 113210020 in words is "one hundred thirteen million, two hundred ten thousand, twenty".