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100031212030 = 2518155265863
BaseRepresentation
bin101110100101001010…
…0110010100111111110
3100120012100101002002211
41131022110302213332
53114330442241110
6113542000011034
710140603162451
oct1351224624776
9316170332084
10100031212030
1139472014172
1217478300a7a
13958211a2b9
144bad267498
152906d5298a
hex174a5329fe

100031212030 has 16 divisors (see below), whose sum is σ = 181050970464. Its totient is φ = 39791420640.

The previous prime is 100031212003. The next prime is 100031212033. The reversal of 100031212030 is 30212130001.

It is a self number, because there is not a number n which added to its sum of digits gives 100031212030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100031212033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27631122 + ... + 27634741.

It is an arithmetic number, because the mean of its divisors is an integer number (11315685654).

Almost surely, 2100031212030 is an apocalyptic number.

100031212030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100031212030 is a deficient number, since it is larger than the sum of its proper divisors (81019758434).

100031212030 is a wasteful number, since it uses less digits than its factorization.

100031212030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55266051.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 100031212030 its reverse (30212130001), we get a palindrome (130243342031).

The spelling of 100031212030 in words is "one hundred billion, thirty-one million, two hundred twelve thousand, thirty".

Divisors: 1 2 5 10 181 362 905 1810 55265863 110531726 276329315 552658630 10003121203 20006242406 50015606015 100031212030