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BaseRepresentation
bin110100001110001101
3101212102021
4310032031
523321101
64330141
71550422
oct641615
9355367
10213901
11136786
12a3951
137648c
1457d49
15435a1
hex3438d

213901 has 2 divisors, whose sum is σ = 213902. Its totient is φ = 213900.

The previous prime is 213887. The next prime is 213919. The reversal of 213901 is 109312.

213901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198025 + 15876 = 445^2 + 126^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-213901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106950 + 106951.

It is an arithmetic number, because the mean of its divisors is an integer number (106951).

2213901 is an apocalyptic number.

It is an amenable number.

213901 is a deficient number, since it is larger than the sum of its proper divisors (1).

213901 is an equidigital number, since it uses as much as digits as its factorization.

213901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 213901 is about 462.4943242895. The cubic root of 213901 is about 59.8050151832.

The spelling of 213901 in words is "two hundred thirteen thousand, nine hundred one".