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230132213 = 1713537189
BaseRepresentation
bin11011011011110…
…00100111110101
3121001000221001022
431231320213311
5432403212323
634500310525
75463043253
oct1555704765
9531027038
10230132213
111089a3813
12650a2445
13388a750c
14227c75d3
151530c4c8
hexdb789f5

230132213 has 4 divisors (see below), whose sum is σ = 243669420. Its totient is φ = 216595008.

The previous prime is 230132207. The next prime is 230132233. The reversal of 230132213 is 312231032.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 118766404 + 111365809 = 10898^2 + 10553^2 .

It is a cyclic number.

It is not a de Polignac number, because 230132213 - 210 = 230131189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 13537189 = 230132213 / (2 + 3 + 0 + 1 + 3 + 2 + 2 + 1 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 230132191 and 230132200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230132233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6768578 + ... + 6768611.

It is an arithmetic number, because the mean of its divisors is an integer number (60917355).

Almost surely, 2230132213 is an apocalyptic number.

It is an amenable number.

230132213 is a deficient number, since it is larger than the sum of its proper divisors (13537207).

230132213 is a wasteful number, since it uses less digits than its factorization.

230132213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13537206.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 230132213 is about 15170.1091953881. The cubic root of 230132213 is about 612.8099449223.

Adding to 230132213 its reverse (312231032), we get a palindrome (542363245).

The spelling of 230132213 in words is "two hundred thirty million, one hundred thirty-two thousand, two hundred thirteen".

Divisors: 1 17 13537189 230132213