20130223 has 2 divisors, whose sum is σ = 20130224. Its totient is φ = 20130222.

The previous prime is 20130203. The next prime is 20130233. The reversal of 20130223 is 32203102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20130223 - 2¹³ = 20122031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20130203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10065111 + 10065112.

It is an arithmetic number, because the mean of its divisors is an integer number (10065112).

Almost surely, 2^20130223 is an apocalyptic number.

20130223 is a deficient number, since it is larger than the sum of its proper divisors (1).

20130223 is an equidigital number, since it uses as much as digits as its factorization.

20130223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 20130223 is about 4486.6717062874. The cubic root of 20130223 is about 272.0296202965.

Adding to 20130223 its reverse (32203102), we get a palindrome (52333325).

The spelling of 20130223 in words is "twenty million, one hundred thirty thousand, two hundred twenty-three".