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BaseRepresentation
bin110100000110011111
3101211201222
4310012133
523312112
64323555
71546115
oct640637
9354658
10213407
11136377
12a35bb
137619c
1457ab5
1543372
hex3419f

213407 has 2 divisors, whose sum is σ = 213408. Its totient is φ = 213406.

The previous prime is 213397. The next prime is 213449. The reversal of 213407 is 704312.

Adding to 213407 its reverse (704312), we get a palindrome (917719).

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213407 - 24 = 213391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106703 + 106704.

It is an arithmetic number, because the mean of its divisors is an integer number (106704).

2213407 is an apocalyptic number.

213407 is a deficient number, since it is larger than the sum of its proper divisors (1).

213407 is an equidigital number, since it uses as much as digits as its factorization.

213407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 213407 is about 461.9599549745. The cubic root of 213407 is about 59.7589402074.

The spelling of 213407 in words is "two hundred thirteen thousand, four hundred seven".