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2013228281 = 17349133923
BaseRepresentation
bin111011111111111…
…0110110011111001
312012022020121000102
41313333312303321
513110341301111
6531434245145
7100614105131
oct16777666371
95168217012
102013228281
11943462229
124822867b5
1326112944c
1415153dac1
15bbb2713b
hex77ff6cf9

2013228281 has 8 divisors (see below), whose sum is σ = 2132326944. Its totient is φ = 1894204480.

The previous prime is 2013228271. The next prime is 2013228299. The reversal of 2013228281 is 1828223102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2013228281 - 222 = 2009033977 is a prime.

It is a super-2 number, since 2×20132282812 = 8106176222836429922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2013228241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42386 + ... + 76308.

It is an arithmetic number, because the mean of its divisors is an integer number (266540868).

Almost surely, 22013228281 is an apocalyptic number.

It is an amenable number.

2013228281 is a deficient number, since it is larger than the sum of its proper divisors (119098663).

2013228281 is a wasteful number, since it uses less digits than its factorization.

2013228281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37431.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 2013228281 is about 44869.0124807756. The cubic root of 2013228281 is about 1262.6927130713.

The spelling of 2013228281 in words is "two billion, thirteen million, two hundred twenty-eight thousand, two hundred eighty-one".

Divisors: 1 17 3491 33923 59347 576691 118425193 2013228281