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1230315212 = 22743939829
BaseRepresentation
bin100100101010101…
…0001111011001100
310011202001111012002
41021111101323030
510004430041322
6322025531432
742326335550
oct11125217314
93152044162
101230315212
11581532035
122a4043b78
13167b79a89
14b9581860
1573027c92
hex49551ecc

1230315212 has 12 divisors (see below), whose sum is σ = 2460630480. Its totient is φ = 527277936.

The previous prime is 1230315181. The next prime is 1230315217. The reversal of 1230315212 is 2125130321.

1230315212 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1230315217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21969887 + ... + 21969942.

It is an arithmetic number, because the mean of its divisors is an integer number (205052540).

Almost surely, 21230315212 is an apocalyptic number.

It is an amenable number.

1230315212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1230315212 is a wasteful number, since it uses less digits than its factorization.

1230315212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43939840 (or 43939838 counting only the distinct ones).

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

The square root of 1230315212 is about 35075.8494123806. The cubic root of 1230315212 is about 1071.5327879291.

Adding to 1230315212 its reverse (2125130321), we get a palindrome (3355445533).

The spelling of 1230315212 in words is "one billion, two hundred thirty million, three hundred fifteen thousand, two hundred twelve".

Divisors: 1 2 4 7 14 28 43939829 87879658 175759316 307578803 615157606 1230315212