113220513 has 24 divisors (see below), whose sum is σ = 195032448. Its totient is φ = 61883712.

The previous prime is 113220491. The next prime is 113220529. The reversal of 113220513 is 315022311.

113220513 is a `hidden beast` number, since 1 + 132 + 20 + 513 = 666.

It is not a de Polignac number, because 113220513 - 2⁸ = 113220257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (113220593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37620 + ... + 40517.

It is an arithmetic number, because the mean of its divisors is an integer number (8126352).

Almost surely, 2^113220513 is an apocalyptic number.

It is an amenable number.

113220513 is a deficient number, since it is larger than the sum of its proper divisors (81811935).

113220513 is a wasteful number, since it uses less digits than its factorization.

113220513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78173 (or 78170 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 113220513 is about 10640.5128165892. The cubic root of 113220513 is about 483.7730890568.

Adding to 113220513 its reverse (315022311), we get a palindrome (428242824).

The spelling of 113220513 in words is "one hundred thirteen million, two hundred twenty thousand, five hundred thirteen".