113133520 has 40 divisors (see below), whose sum is σ = 266973984. Its totient is φ = 44575872.

The previous prime is 113133499. The next prime is 113133529. The reversal of 113133520 is 25331311.

113133520 = T₂₁₃ + T₂₁₄ + ... + T₈₈₂.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113133529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5194 + ... + 15913.

Almost surely, 2^113133520 is an apocalyptic number.

113133520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113133520 is an abundant number, since it is smaller than the sum of its proper divisors (153840464).

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

113133520 is a wasteful number, since it uses less digits than its factorization.

113133520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21187 (or 21181 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 113133520 is about 10636.4242111717. The cubic root of 113133520 is about 483.6491549320.

Adding to 113133520 its reverse (25331311), we get a palindrome (138464831).

The spelling of 113133520 in words is "one hundred thirteen million, one hundred thirty-three thousand, five hundred twenty".