113533320252 has 144 divisors (see below), whose sum is σ = 312449163264. Its totient is φ = 31797792000.

The previous prime is 113533320223. The next prime is 113533320259. The reversal of 113533320252 is 252023335311.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113533320259) 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, 1924677 + ... + 1982787.

It is an arithmetic number, because the mean of its divisors is an integer number (2169785856).

Almost surely, 2^113533320252 is an apocalyptic number.

113533320252 is a gapful number since it is divisible by the number (12) 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 113533320252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156224581632).

113533320252 is an abundant number, since it is smaller than the sum of its proper divisors (198915843012).

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

113533320252 is a wasteful number, since it uses less digits than its factorization.

113533320252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58208 (or 58187 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 30.

Adding to 113533320252 its reverse (252023335311), we get a palindrome (365556655563).

The spelling of 113533320252 in words is "one hundred thirteen billion, five hundred thirty-three million, three hundred twenty thousand, two hundred fifty-two".