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2123213 is a prime number
BaseRepresentation
bin1000000110010111001101
310222212111112
420012113031
51020420323
6113301405
724022061
oct10062715
93885445
102123213
111220224
12864865
13594551
143d3aa1
152be178
hex2065cd

2123213 has 2 divisors, whose sum is σ = 2123214. Its totient is φ = 2123212.

The previous prime is 2123203. The next prime is 2123237. The reversal of 2123213 is 3123212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1965604 + 157609 = 1402^2 + 397^2 .

It is a cyclic number.

It is not a de Polignac number, because 2123213 - 28 = 2122957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2123203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061606 + 1061607.

It is an arithmetic number, because the mean of its divisors is an integer number (1061607).

22123213 is an apocalyptic number.

It is an amenable number.

2123213 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123213 is an equidigital number, since it uses as much as digits as its factorization.

2123213 is an evil number, because the sum of its binary digits is even.

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

The square root of 2123213 is about 1457.1249088530. The cubic root of 2123213 is about 128.5280311501.

Adding to 2123213 its reverse (3123212), we get a palindrome (5246425).

Subtracting 2123213 from its reverse (3123212), we obtain a palindrome (999999).

The spelling of 2123213 in words is "two million, one hundred twenty-three thousand, two hundred thirteen".