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2123013113 = 13163308701
BaseRepresentation
bin111111010001010…
…1001101111111001
312110221211020111022
41332202221233321
513321442404423
6550355312225
7103416212414
oct17642515771
95427736438
102123013113
1199a4271a1
124b2bab675
1327aab78a0
14161d5ab7b
15c65b0dc8
hex7e8a9bf9

2123013113 has 4 divisors (see below), whose sum is σ = 2286321828. Its totient is φ = 1959704400.

The previous prime is 2123013049. The next prime is 2123013119. The reversal of 2123013113 is 3113103212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 386790889 + 1736222224 = 19667^2 + 41668^2 .

It is a cyclic number.

It is not a de Polignac number, because 2123013113 - 26 = 2123013049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2123013091 and 2123013100.

It is not an unprimeable number, because it can be changed into a prime (2123013119) 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, 81654338 + ... + 81654363.

It is an arithmetic number, because the mean of its divisors is an integer number (571580457).

Almost surely, 22123013113 is an apocalyptic number.

It is an amenable number.

2123013113 is a deficient number, since it is larger than the sum of its proper divisors (163308715).

2123013113 is a wasteful number, since it uses less digits than its factorization.

2123013113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163308714.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 2123013113 is about 46076.1664312473. The cubic root of 2123013113 is about 1285.2399765793.

Adding to 2123013113 its reverse (3113103212), we get a palindrome (5236116325).

Subtracting 2123013113 from its reverse (3113103212), we obtain a palindrome (990090099).

It can be divided in two parts, 21230 and 13113, that added together give a palindrome (34343).

The spelling of 2123013113 in words is "two billion, one hundred twenty-three million, thirteen thousand, one hundred thirteen".

Divisors: 1 13 163308701 2123013113