113243520 has 192 divisors, whose sum is σ = 391986000. Its totient is φ = 27795456.

The previous prime is 113243503. The next prime is 113243531. The reversal of 113243520 is 25342311.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 324306 + ... + 324654.

Almost surely, 2^113243520 is an apocalyptic number.

113243520 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 113243520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195993000).

113243520 is an abundant number, since it is smaller than the sum of its proper divisors (278742480).

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

113243520 is a wasteful number, since it uses less digits than its factorization.

113243520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397 (or 372 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 113243520 is about 10641.5938655824. The cubic root of 113243520 is about 483.8058552442.

Adding to 113243520 its reverse (25342311), we get a palindrome (138585831).

The spelling of 113243520 in words is "one hundred thirteen million, two hundred forty-three thousand, five hundred twenty".