113920321 has 2 divisors, whose sum is σ = 113920322. Its totient is φ = 113920320.

The previous prime is 113920309. The next prime is 113920337. The reversal of 113920321 is 123029311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93993025 + 19927296 = 9695^2 + 4464^2 .

It is a cyclic number.

It is not a de Polignac number, because 113920321 - 2⁷ = 113920193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 113920292 and 113920301.

It is not a weakly prime, because it can be changed into another prime (113920361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56960160 + 56960161.

It is an arithmetic number, because the mean of its divisors is an integer number (56960161).

Almost surely, 2^113920321 is an apocalyptic number.

It is an amenable number.

113920321 is a deficient number, since it is larger than the sum of its proper divisors (1).

113920321 is an equidigital number, since it uses as much as digits as its factorization.

113920321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 113920321 is about 10673.3462887700. The cubic root of 113920321 is about 484.7677649624.

Adding to 113920321 its reverse (123029311), we get a palindrome (236949632).

The spelling of 113920321 in words is "one hundred thirteen million, nine hundred twenty thousand, three hundred twenty-one".