20340113 has 4 divisors (see below), whose sum is σ = 20520228. Its totient is φ = 20160000.

The previous prime is 20340101. The next prime is 20340167. The reversal of 20340113 is 31104302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31104302 = 2 ⋅15552151.

It can be written as a sum of positive squares in 2 ways, for example, as 10804369 + 9535744 = 3287^2 + 3088^2 .

It is a cyclic number.

It is not a de Polignac number, because 20340113 - 2⁴ = 20340097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20340413) 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 3 ways as a sum of consecutive naturals, for example, 89888 + ... + 90113.

It is an arithmetic number, because the mean of its divisors is an integer number (5130057).

Almost surely, 2^20340113 is an apocalyptic number.

It is an amenable number.

20340113 is a deficient number, since it is larger than the sum of its proper divisors (180115).

20340113 is a wasteful number, since it uses less digits than its factorization.

20340113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180114.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 20340113 is about 4510.0014412415. The cubic root of 20340113 is about 272.9718022462.

Adding to 20340113 its reverse (31104302), we get a palindrome (51444415).

The spelling of 20340113 in words is "twenty million, three hundred forty thousand, one hundred thirteen".