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1230213143 = 17499145021
BaseRepresentation
bin100100101010011…
…1001000000010111
310011201212022011202
41021110321000113
510004413310033
6322023423115
742325432145
oct11124710027
93151768152
101230213143
11581472385
122a3bb4a9b
13167b42493
14b9556595
15730078e8
hex49539017

1230213143 has 8 divisors (see below), whose sum is σ = 1305198000. Its totient is φ = 1155519360.

The previous prime is 1230213137. The next prime is 1230213181. The reversal of 1230213143 is 3413120321.

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 1230213143 - 26 = 1230213079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230213343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64028 + ... + 80993.

It is an arithmetic number, because the mean of its divisors is an integer number (163149750).

Almost surely, 21230213143 is an apocalyptic number.

1230213143 is a deficient number, since it is larger than the sum of its proper divisors (74984857).

1230213143 is a wasteful number, since it uses less digits than its factorization.

1230213143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145537.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1230213143 is about 35074.3944067464. The cubic root of 1230213143 is about 1071.5031550611.

Adding to 1230213143 its reverse (3413120321), we get a palindrome (4643333464).

The spelling of 1230213143 in words is "one billion, two hundred thirty million, two hundred thirteen thousand, one hundred forty-three".

Divisors: 1 17 499 8483 145021 2465357 72365479 1230213143