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1213030300 = 225219638437
BaseRepresentation
bin100100001001101…
…0101111110011100
310010112112022202011
41020103111332130
54441013432200
6320211241004
742026405326
oct11023257634
93115468664
101213030300
115727a6689
1229a2a9164
13164407411
14b7162616
15717615ba
hex484d5f9c

1213030300 has 36 divisors (see below), whose sum is σ = 2770820920. Its totient is φ = 459673920.

The previous prime is 1213030289. The next prime is 1213030303. The reversal of 1213030300 is 30303121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213030303) 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, 317319 + ... + 321118.

Almost surely, 21213030300 is an apocalyptic number.

1213030300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213030300 is an abundant number, since it is smaller than the sum of its proper divisors (1557790620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213030300 is a wasteful number, since it uses less digits than its factorization.

1213030300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638470 (or 638463 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 1213030300 is about 34828.5845247837. The cubic root of 1213030300 is about 1066.4910529031.

Adding to 1213030300 its reverse (30303121), we get a palindrome (1243333421).

The spelling of 1213030300 in words is "one billion, two hundred thirteen million, thirty thousand, three hundred".

Divisors: 1 2 4 5 10 19 20 25 38 50 76 95 100 190 380 475 950 1900 638437 1276874 2553748 3192185 6384370 12130303 12768740 15960925 24260606 31921850 48521212 60651515 63843700 121303030 242606060 303257575 606515150 1213030300