20130243 has 16 divisors (see below), whose sum is σ = 30835200. Its totient is φ = 11442816.

The previous prime is 20130233. The next prime is 20130251. The reversal of 20130243 is 34203102.

It is not a de Polignac number, because 20130243 - 2⁶ = 20130179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20130203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1771 + ... + 6587.

It is an arithmetic number, because the mean of its divisors is an integer number (1927200).

Almost surely, 2^20130243 is an apocalyptic number.

20130243 is a deficient number, since it is larger than the sum of its proper divisors (10704957).

20130243 is a wasteful number, since it uses less digits than its factorization.

20130243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5026.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 20130243 is about 4486.6739351105. The cubic root of 20130243 is about 272.0297103864.

Adding to 20130243 its reverse (34203102), we get a palindrome (54333345).

The spelling of 20130243 in words is "twenty million, one hundred thirty thousand, two hundred forty-three".