20130343 has 2 divisors, whose sum is σ = 20130344. Its totient is φ = 20130342.

The previous prime is 20130293. The next prime is 20130349. The reversal of 20130343 is 34303102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20130343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20130349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10065171 + 10065172.

It is an arithmetic number, because the mean of its divisors is an integer number (10065172).

Almost surely, 2^20130343 is an apocalyptic number.

20130343 is a deficient number, since it is larger than the sum of its proper divisors (1).

20130343 is an equidigital number, since it uses as much as digits as its factorization.

20130343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 20130343 is about 4486.6850792094. The cubic root of 20130343 is about 272.0301608351.

Adding to 20130343 its reverse (34303102), we get a palindrome (54433445).

The spelling of 20130343 in words is "twenty million, one hundred thirty thousand, three hundred forty-three".