113020520 has 32 divisors (see below), whose sum is σ = 256926600. Its totient is φ = 44740608.

The previous prime is 113020517. The next prime is 113020541. The reversal of 113020520 is 25020311.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 75099556 + 37920964 = 8666^2 + 6158^2 .

It is a junction number, because it is equal to n+sod(n) for n = 113020495 and 113020504.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10685 + ... + 18444.

Almost surely, 2^113020520 is an apocalyptic number.

113020520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113020520 is an abundant number, since it is smaller than the sum of its proper divisors (143906080).

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

113020520 is a wasteful number, since it uses less digits than its factorization.

113020520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29237 (or 29233 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 113020520 is about 10631.1109485321. The cubic root of 113020520 is about 483.4880751725.

Adding to 113020520 its reverse (25020311), we get a palindrome (138040831).

The spelling of 113020520 in words is "one hundred thirteen million, twenty thousand, five hundred twenty".