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1213302223 = 71710195817
BaseRepresentation
bin100100001010001…
…1000010111001111
310010120001010202101
41020110120113033
54441101132343
6320221135531
742031620160
oct11024302717
93116033671
101213302223
11572971a11
1229a3ba5a7
131644a1113
14b71d3767
15717b6e4d
hex485185cf

1213302223 has 8 divisors (see below), whose sum is σ = 1468197792. Its totient is φ = 978798336.

The previous prime is 1213302163. The next prime is 1213302241. The reversal of 1213302223 is 3222033121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1213302223 - 29 = 1213301711 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1213302223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213302283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5097790 + ... + 5098027.

It is an arithmetic number, because the mean of its divisors is an integer number (183524724).

Almost surely, 21213302223 is an apocalyptic number.

1213302223 is a deficient number, since it is larger than the sum of its proper divisors (254895569).

1213302223 is a wasteful number, since it uses less digits than its factorization.

1213302223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10195841.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1213302223 is about 34832.4880391855. The cubic root of 1213302223 is about 1066.5707381288.

Adding to 1213302223 its reverse (3222033121), we get a palindrome (4435335344).

It can be divided in two parts, 121330222 and 3, that added together give a square (121330225 = 110152).

The spelling of 1213302223 in words is "one billion, two hundred thirteen million, three hundred two thousand, two hundred twenty-three".

Divisors: 1 7 17 119 10195817 71370719 173328889 1213302223