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100031311230 = 23530710861163
BaseRepresentation
bin101110100101001010…
…1001010110101111110
3100120012100120010011220
41131022111022311332
53114331003424410
6113542002054210
710140604054614
oct1351225126576
9316170503156
10100031311230
1139472081754
121747834a366
1395821534b6
144bad2916b4
152906d72070
hex174a54ad7e

100031311230 has 32 divisors (see below), whose sum is σ = 240857172864. Its totient is φ = 26588124576.

The previous prime is 100031311199. The next prime is 100031311253. The reversal of 100031311230 is 32113130001.

It is a super-2 number, since 2×1000313112302 (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5421372 + ... + 5439791.

It is an arithmetic number, because the mean of its divisors is an integer number (7526786652).

Almost surely, 2100031311230 is an apocalyptic number.

100031311230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100031311230 is an abundant number, since it is smaller than the sum of its proper divisors (140825861634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100031311230 is a wasteful number, since it uses less digits than its factorization.

100031311230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10861480.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 100031311230 its reverse (32113130001), we get a palindrome (132144441231).

The spelling of 100031311230 in words is "one hundred billion, thirty-one million, three hundred eleven thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 307 614 921 1535 1842 3070 4605 9210 10861163 21722326 32583489 54305815 65166978 108611630 162917445 325834890 3334377041 6668754082 10003131123 16671885205 20006262246 33343770410 50015655615 100031311230