113402321 has 4 divisors (see below), whose sum is σ = 113469492. Its totient is φ = 113335152.

The previous prime is 113402297. The next prime is 113402323. The reversal of 113402321 is 123204311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123204311 = 5701 ⋅21611.

It can be written as a sum of positive squares in 2 ways, for example, as 45751696 + 67650625 = 6764^2 + 8225^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113402321 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 113402321.

It is not an unprimeable number, because it can be changed into a prime (113402323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30986 + ... + 34451.

It is an arithmetic number, because the mean of its divisors is an integer number (28367373).

Almost surely, 2^113402321 is an apocalyptic number.

It is an amenable number.

113402321 is a deficient number, since it is larger than the sum of its proper divisors (67171).

113402321 is an equidigital number, since it uses as much as digits as its factorization.

113402321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67170.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 113402321 is about 10649.0525869675. The cubic root of 113402321 is about 484.0318960493.

Adding to 113402321 its reverse (123204311), we get a palindrome (236606632).

The spelling of 113402321 in words is "one hundred thirteen million, four hundred two thousand, three hundred twenty-one".