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203110130020 = 22572396070237
BaseRepresentation
bin1011110100101001001…
…1101010000101100100
3201102021002112122211011
42331022103222011210
511311432143130040
6233150230552004
720450154422320
oct2751223520544
9642232478734
10203110130020
1179158411996
1233445208604
13161cb782cb5
149b8b194980
15543b51e3ea
hex2f4a4ea164

203110130020 has 48 divisors (see below), whose sum is σ = 489503992320. Its totient is φ = 69346376064.

The previous prime is 203110129997. The next prime is 203110130029. The reversal of 203110130020 is 20031011302.

It is not an unprimeable number, because it can be changed into a prime (203110130029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3001659 + ... + 3068578.

It is an arithmetic number, because the mean of its divisors is an integer number (10197999840).

Almost surely, 2203110130020 is an apocalyptic number.

203110130020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203110130020 is an abundant number, since it is smaller than the sum of its proper divisors (286393862300).

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

203110130020 is a wasteful number, since it uses less digits than its factorization.

203110130020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6070492 (or 6070490 counting only the distinct ones).

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

Adding to 203110130020 its reverse (20031011302), we get a palindrome (223141141322).

The spelling of 203110130020 in words is "two hundred three billion, one hundred ten million, one hundred thirty thousand, twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 239 478 956 1195 1673 2390 3346 4780 6692 8365 16730 33460 6070237 12140474 24280948 30351185 42491659 60702370 84983318 121404740 169966636 212458295 424916590 849833180 1450786643 2901573286 5803146572 7253933215 10155506501 14507866430 20311013002 29015732860 40622026004 50777532505 101555065010 203110130020