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2013031133021 = 18719107539459
BaseRepresentation
bin11101010010110010000…
…000010110111101011101
321010102222121012222220102
4131102302000112331131
5230440141432224041
64140435043230445
7265302534210356
oct35226200267535
97112877188812
102013031133021
117067a365aa07
12286180078425
13117a9c21697c
146d607400d2d
153756c02e09b
hex1d4b2016f5d

2013031133021 has 4 divisors (see below), whose sum is σ = 2013138691200. Its totient is φ = 2012923574844.

The previous prime is 2013031132949. The next prime is 2013031133041. The reversal of 2013031133021 is 1203311303102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2013031133021 - 226 = 2012964024157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2013031132984 and 2013031133002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2013031133041) 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, 53751011 + ... + 53788448.

It is an arithmetic number, because the mean of its divisors is an integer number (503284672800).

Almost surely, 22013031133021 is an apocalyptic number.

It is an amenable number.

2013031133021 is a deficient number, since it is larger than the sum of its proper divisors (107558179).

2013031133021 is a wasteful number, since it uses less digits than its factorization.

2013031133021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107558178.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 2013031133021 its reverse (1203311303102), we get a palindrome (3216342436123).

The spelling of 2013031133021 in words is "two trillion, thirteen billion, thirty-one million, one hundred thirty-three thousand, twenty-one".

Divisors: 1 18719 107539459 2013031133021