113400521 has 12 divisors (see below), whose sum is σ = 123125328. Its totient is φ = 104395824.

The previous prime is 113400491. The next prime is 113400541. The reversal of 113400521 is 125004311.

It is not a de Polignac number, because 113400521 - 2¹⁴ = 113384137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 113400521.

It is not an unprimeable number, because it can be changed into a prime (113400541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87746 + ... + 89028.

It is an arithmetic number, because the mean of its divisors is an integer number (10260444).

Almost surely, 2^113400521 is an apocalyptic number.

It is an amenable number.

113400521 is a deficient number, since it is larger than the sum of its proper divisors (9724807).

113400521 is a wasteful number, since it uses less digits than its factorization.

113400521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832 (or 1819 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 113400521 is about 10648.9680720716. The cubic root of 113400521 is about 484.0293350728.

Adding to 113400521 its reverse (125004311), we get a palindrome (238404832).

The spelling of 113400521 in words is "one hundred thirteen million, four hundred thousand, five hundred twenty-one".