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1212315230 = 25740143189
BaseRepresentation
bin100100001000010…
…0111011001011110
310010111011222212002
41020100213121132
54440323041410
6320144042302
742020336510
oct11020473136
93114158762
101212315230
11572358415
1229a003392
13164216ab9
14b7017bb0
157166e7a5
hex4842765e

1212315230 has 32 divisors (see below), whose sum is σ = 2500182720. Its totient is φ = 414604800.

The previous prime is 1212315229. The next prime is 1212315239. The reversal of 1212315230 is 325132121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212315239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6476 + ... + 49664.

It is an arithmetic number, because the mean of its divisors is an integer number (78130710).

Almost surely, 21212315230 is an apocalyptic number.

1212315230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212315230 is an abundant number, since it is smaller than the sum of its proper divisors (1287867490).

1212315230 is a wasteful number, since it uses less digits than its factorization.

1212315230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43604.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1212315230 is about 34818.3174492967. The cubic root of 1212315230 is about 1066.2814495492.

Adding to 1212315230 its reverse (325132121), we get a palindrome (1537447351).

The spelling of 1212315230 in words is "one billion, two hundred twelve million, three hundred fifteen thousand, two hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 401 802 2005 2807 4010 5614 14035 28070 43189 86378 215945 302323 431890 604646 1511615 3023230 17318789 34637578 86593945 121231523 173187890 242463046 606157615 1212315230