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2013123223 = 4751078387
BaseRepresentation
bin111011111111101…
…1101001010010111
312012022001020220101
41313333131022113
513110324420343
6531432114531
7100613156626
oct16777351227
95168036811
102013123223
119433a0301
12482235a47
132610c0697
141515136bd
15bbb05e4d
hex77fdd297

2013123223 has 8 divisors (see below), whose sum is σ = 2056603392. Its totient is φ = 1969670136.

The previous prime is 2013123209. The next prime is 2013123241. The reversal of 2013123223 is 3223213102.

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 2013123223 - 25 = 2013123191 is a prime.

It is a super-2 number, since 2×20131232232 = 8105330221963815458, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2013123223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2013123253) 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, 235836 + ... + 244222.

It is an arithmetic number, because the mean of its divisors is an integer number (257075424).

Almost surely, 22013123223 is an apocalyptic number.

2013123223 is a deficient number, since it is larger than the sum of its proper divisors (43480169).

2013123223 is an equidigital number, since it uses as much as digits as its factorization.

2013123223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13541.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 2013123223 is about 44867.8417466229. The cubic root of 2013123223 is about 1262.6707486341.

Adding to 2013123223 its reverse (3223213102), we get a palindrome (5236336325).

The spelling of 2013123223 in words is "two billion, thirteen million, one hundred twenty-three thousand, two hundred twenty-three".

Divisors: 1 47 5107 8387 240029 394189 42832409 2013123223