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BaseRepresentation
bin110100000000011111
3101211012202
4310000133
523304043
64322115
71545026
oct640037
9354182
10213023
11136058
12a333b
1375c65
14578bd
15431b8
hex3401f

213023 has 2 divisors, whose sum is σ = 213024. Its totient is φ = 213022.

The previous prime is 213019. The next prime is 213029. The reversal of 213023 is 320312.

Adding to 213023 its reverse (320312), we get a palindrome (533335).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213023 - 22 = 213019 is a prime.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 212995 and 213013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106511 + 106512.

It is an arithmetic number, because the mean of its divisors is an integer number (106512).

2213023 is an apocalyptic number.

213023 is a deficient number, since it is larger than the sum of its proper divisors (1).

213023 is an equidigital number, since it uses as much as digits as its factorization.

213023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 213023 is about 461.5441474009. The cubic root of 213023 is about 59.7230757004.

The spelling of 213023 in words is "two hundred thirteen thousand, twenty-three".