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2031000103 = 11184636373
BaseRepresentation
bin111100100001110…
…1001101000100111
312020112200111101001
41321003221220213
513124414000403
6533311214131
7101221134046
oct17103515047
95215614331
102031000103
119524a0490
12488217347
13264a0c612
14153a4855d
15bd487c1d
hex790e9a27

2031000103 has 4 divisors (see below), whose sum is σ = 2215636488. Its totient is φ = 1846363720.

The previous prime is 2031000091. The next prime is 2031000107. The reversal of 2031000103 is 3010001302.

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

It is a cyclic number.

It is not a de Polignac number, because 2031000103 - 25 = 2031000071 is a prime.

It is a super-3 number, since 3×20310001033 (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 2031000103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031000107) 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, 92318176 + ... + 92318197.

It is an arithmetic number, because the mean of its divisors is an integer number (553909122).

Almost surely, 22031000103 is an apocalyptic number.

2031000103 is a deficient number, since it is larger than the sum of its proper divisors (184636385).

2031000103 is a wasteful number, since it uses less digits than its factorization.

2031000103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184636384.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 2031000103 is about 45066.6184997277. The cubic root of 2031000103 is about 1266.3973171590.

Adding to 2031000103 its reverse (3010001302), we get a palindrome (5041001405).

The spelling of 2031000103 in words is "two billion, thirty-one million, one hundred three", and thus it is an aban number.

Divisors: 1 11 184636373 2031000103