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1230212203 = 11253191831
BaseRepresentation
bin100100101010011…
…1000110001101011
310011201212020212221
41021110320301223
510004413242303
6322023414511
742325426333
oct11124706153
93151766787
101230212203
11581471700
122a3bb4437
13167b41c1c
14b95560c3
15730074bd
hex49538c6b

1230212203 has 12 divisors (see below), whose sum is σ = 1377737424. Its totient is φ = 1097267600.

The previous prime is 1230212197. The next prime is 1230212213. The reversal of 1230212203 is 3022120321.

It is not a de Polignac number, because 1230212203 - 29 = 1230211691 is a prime.

It is a super-2 number, since 2×12302122032 = 3026844128820226418, which contains 22 as substring.

It is a Duffinian number.

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

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89503 + ... + 102328.

It is an arithmetic number, because the mean of its divisors is an integer number (114811452).

Almost surely, 21230212203 is an apocalyptic number.

1230212203 is a deficient number, since it is larger than the sum of its proper divisors (147525221).

1230212203 is a wasteful number, since it uses less digits than its factorization.

1230212203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191906 (or 191895 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1230212203 is about 35074.3810066550. The cubic root of 1230212203 is about 1071.5028821509.

Adding to 1230212203 its reverse (3022120321), we get a palindrome (4252332524).

The spelling of 1230212203 in words is "one billion, two hundred thirty million, two hundred twelve thousand, two hundred three".

Divisors: 1 11 53 121 583 6413 191831 2110141 10167043 23211551 111837473 1230212203