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2031102012020 = 2251632240927803
BaseRepresentation
bin11101100011100111000…
…111010010101001110100
321012011121222202202122012
4131203213013102221310
5231234144103341040
64153024141023352
7266512413146654
oct35434707225164
97164558682565
102031102012020
11713427153854
12289783b54b58
131196bc032b93
147043d3dc364
1537c78738865
hex1d8e71d2a74

2031102012020 has 48 divisors (see below), whose sum is σ = 4291827664320. Its totient is φ = 807391431936.

The previous prime is 2031102012019. The next prime is 2031102012077. The reversal of 2031102012020 is 202102011302.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2031102011986 and 2031102012004.

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, 73039439 + ... + 73067241.

It is an arithmetic number, because the mean of its divisors is an integer number (89413076340).

Almost surely, 22031102012020 is an apocalyptic number.

2031102012020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2031102012020 is an abundant number, since it is smaller than the sum of its proper divisors (2260725652300).

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

2031102012020 is a wasteful number, since it uses less digits than its factorization.

2031102012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50384 (or 50382 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 2031102012020 its reverse (202102011302), we get a palindrome (2233204023322).

The spelling of 2031102012020 in words is "two trillion, thirty-one billion, one hundred two million, twelve thousand, twenty".

Divisors: 1 2 4 5 10 20 163 326 652 815 1630 3260 22409 27803 44818 55606 89636 111212 112045 139015 224090 278030 448180 556060 3652667 4531889 7305334 9063778 14610668 18127556 18263335 22659445 36526670 45318890 73053340 90637780 623037427 1246074854 2492149708 3115187135 6230374270 12460748540 101555100601 203110201202 406220402404 507775503005 1015551006010 2031102012020