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2013042031 = 711213182821
BaseRepresentation
bin111011111111100…
…1001010101101111
312012021220010112021
41313333021111233
513110314321111
6531430251011
7100612401130
oct16777112557
95167803467
102013042031
11943345300
124821b6a67
13261092740
141514d1c87
15bbadbd71
hex77fc956f

2013042031 has 24 divisors (see below), whose sum is σ = 2723316512. Its totient is φ = 1447934400.

The previous prime is 2013042019. The next prime is 2013042037. The reversal of 2013042031 is 1302403102.

It is a happy number.

It is not a de Polignac number, because 2013042031 - 219 = 2012517743 is a prime.

It is a super-2 number, since 2×20130420312 = 8104676437145209922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2013041996 and 2013042014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2013042037) 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, 80400 + ... + 102421.

Almost surely, 22013042031 is an apocalyptic number.

2013042031 is a deficient number, since it is larger than the sum of its proper divisors (710274481).

2013042031 is a wasteful number, since it uses less digits than its factorization.

2013042031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182863 (or 182852 counting only the distinct ones).

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

The square root of 2013042031 is about 44866.9369469323. The cubic root of 2013042031 is about 1262.6537733291.

Adding to 2013042031 its reverse (1302403102), we get a palindrome (3315445133).

The spelling of 2013042031 in words is "two billion, thirteen million, forty-two thousand, thirty-one".

Divisors: 1 7 11 13 77 91 121 143 847 1001 1573 11011 182821 1279747 2011031 2376673 14077217 16636711 22121341 26143403 154849387 183003821 287577433 2013042031