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2012121310 = 257913191931
BaseRepresentation
bin111011111101110…
…1000100011011110
312012020011100112111
41313323220203132
513110100340220
6531354424234
7100601514613
oct16773504336
95166140474
102012121310
11942876581
12481a3207a
13260b2c634
1415133250a
15bb9a915a
hex77ee88de

2012121310 has 32 divisors (see below), whose sum is σ = 3672345600. Its totient is φ = 793646880.

The previous prime is 2012121301. The next prime is 2012121311. The reversal of 2012121310 is 131212102.

It is a super-2 number, since 2×20121213102 = 8097264332312232200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012121311) 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, 1041045 + ... + 1042975.

It is an arithmetic number, because the mean of its divisors is an integer number (114760800).

Almost surely, 22012121310 is an apocalyptic number.

2012121310 is a deficient number, since it is larger than the sum of its proper divisors (1660224290).

2012121310 is a wasteful number, since it uses less digits than its factorization.

2012121310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3336.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2012121310 is about 44856.6752000190. The cubic root of 2012121310 is about 1262.4612406491.

Adding to 2012121310 its reverse (131212102), we get a palindrome (2143333412).

The spelling of 2012121310 in words is "two billion, twelve million, one hundred twenty-one thousand, three hundred ten".

Divisors: 1 2 5 10 79 158 395 790 1319 1931 2638 3862 6595 9655 13190 19310 104201 152549 208402 305098 521005 762745 1042010 1525490 2546989 5093978 12734945 25469890 201212131 402424262 1006060655 2012121310