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2031042013 = 721113289859
BaseRepresentation
bin111100100001111…
…0011110111011101
312020112202121212021
41321003303313131
513124421321023
6533312140141
7101221400200
oct17103636735
95215677767
102031042013
11952519a20
12488237651
13264a25710
14153a59937
15bd49535d
hex790f3ddd

2031042013 has 24 divisors (see below), whose sum is σ = 2775699360. Its totient is φ = 1460884320.

The previous prime is 2031042011. The next prime is 2031042023. The reversal of 2031042013 is 3102401302.

It is a happy number.

It is not a de Polignac number, because 2031042013 - 21 = 2031042011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031042011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 137923 + ... + 151936.

It is an arithmetic number, because the mean of its divisors is an integer number (115654140).

Almost surely, 22031042013 is an apocalyptic number.

It is an amenable number.

2031042013 is a deficient number, since it is larger than the sum of its proper divisors (744657347).

2031042013 is a wasteful number, since it uses less digits than its factorization.

2031042013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289897 (or 289890 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2031042013 is about 45067.0834756366. The cubic root of 2031042013 is about 1266.4060278670.

Adding to 2031042013 its reverse (3102401302), we get a palindrome (5133443315).

The spelling of 2031042013 in words is "two billion, thirty-one million, forty-two thousand, thirteen".

Divisors: 1 7 11 13 49 77 91 143 539 637 1001 7007 289859 2029013 3188449 3768167 14203091 22319143 26377169 41449837 156234001 184640183 290148859 2031042013