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1213103230 = 25131926033
BaseRepresentation
bin100100001001110…
…0111110001111110
310010112200000210021
41020103213301332
54441023300410
6320213002354
742030131053
oct11023476176
93115600707
101213103230
11572846459
1229a3233ba
13164431681
14b718102a
1571777eda
hex484e7c7e

1213103230 has 16 divisors (see below), whose sum is σ = 2200256784. Its totient is φ = 481536640.

The previous prime is 1213103219. The next prime is 1213103239. The reversal of 1213103230 is 323013121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213103239) 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 7 ways as a sum of consecutive naturals, for example, 461707 + ... + 464326.

It is an arithmetic number, because the mean of its divisors is an integer number (137516049).

Almost surely, 21213103230 is an apocalyptic number.

1213103230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213103230 is a deficient number, since it is larger than the sum of its proper divisors (987153554).

1213103230 is a wasteful number, since it uses less digits than its factorization.

1213103230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926171.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1213103230 is about 34829.6314938875. The cubic root of 1213103230 is about 1066.5124257229.

Adding to 1213103230 its reverse (323013121), we get a palindrome (1536116351).

The spelling of 1213103230 in words is "one billion, two hundred thirteen million, one hundred three thousand, two hundred thirty".

Divisors: 1 2 5 10 131 262 655 1310 926033 1852066 4630165 9260330 121310323 242620646 606551615 1213103230