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1230212223 = 323713128201
BaseRepresentation
bin100100101010011…
…1000110001111111
310011201212020220200
41021110320301333
510004413242343
6322023414543
742325426362
oct11124706177
93151766820
101230212223
11581471719
122a3bb4453
13167b41c36
14b95560d9
15730074d3
hex49538c7f

1230212223 has 24 divisors (see below), whose sum is σ = 1838996016. Its totient is φ = 791856000.

The previous prime is 1230212213. The next prime is 1230212231. The reversal of 1230212223 is 3222120321.

1230212223 is a `hidden beast` number, since 1 + 230 + 212 + 223 = 666.

It is not a de Polignac number, because 1230212223 - 220 = 1229163647 is a prime.

It is a super-2 number, since 2×12302122232 = 3026844227237203458, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1230212196 and 1230212205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230212213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29523 + ... + 57723.

It is an arithmetic number, because the mean of its divisors is an integer number (76624834).

Almost surely, 21230212223 is an apocalyptic number.

1230212223 is a deficient number, since it is larger than the sum of its proper divisors (608783793).

1230212223 is a wasteful number, since it uses less digits than its factorization.

1230212223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28375 (or 28372 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1230212223 is about 35074.3812917634. The cubic root of 1230212223 is about 1071.5028879575.

Adding to 1230212223 its reverse (3222120321), we get a palindrome (4452332544).

The spelling of 1230212223 in words is "one billion, two hundred thirty million, two hundred twelve thousand, two hundred twenty-three".

Divisors: 1 3 9 37 111 131 333 393 1179 4847 14541 28201 43623 84603 253809 1043437 3130311 3694331 9390933 11082993 33248979 136690247 410070741 1230212223