113213020 has 48 divisors (see below), whose sum is σ = 251546400. Its totient is φ = 42681600.

The previous prime is 113213017. The next prime is 113213027. The reversal of 113213020 is 20312311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113213027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86370 + ... + 87670.

It is an arithmetic number, because the mean of its divisors is an integer number (5240550).

Almost surely, 2^113213020 is an apocalyptic number.

113213020 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 113213020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125773200).

113213020 is an abundant number, since it is smaller than the sum of its proper divisors (138333380).

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

113213020 is a wasteful number, since it uses less digits than its factorization.

113213020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558 (or 1556 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 113213020 is about 10640.1607130720. The cubic root of 113213020 is about 483.7624166924.

Adding to 113213020 its reverse (20312311), we get a palindrome (133525331).

It can be divided in two parts, 11321 and 3020, that added together give a palindrome (14341).

The spelling of 113213020 in words is "one hundred thirteen million, two hundred thirteen thousand, twenty".