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20031201303020 = 2251636144540277
BaseRepresentation
bin1001000110111111000001…
…01000110101100111101100
32121220222000212012220222022
410203133200220311213230
510111142400013144040
6110334112402205312
74135130561513615
oct443374050654754
977828025186868
1020031201303020
116423203a17886
1222b6220953838
13b23c1b50840b
144d3730054c0c
1524b0ce1a66b5
hex1237e0a359ec

20031201303020 has 24 divisors (see below), whose sum is σ = 42323593434864. Its totient is φ = 7963324197696.

The previous prime is 20031201302993. The next prime is 20031201303083. The reversal of 20031201303020 is 2030310213002.

It is a super-2 number, since 2×200312013030202 (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20031201303020.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3072266879 + ... + 3072273398.

It is an arithmetic number, because the mean of its divisors is an integer number (1763483059786).

Almost surely, 220031201303020 is an apocalyptic number.

20031201303020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20031201303020 is an abundant number, since it is smaller than the sum of its proper divisors (22292392131844).

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

20031201303020 is a wasteful number, since it uses less digits than its factorization.

20031201303020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6144540449 (or 6144540447 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20031201303020 its reverse (2030310213002), we get a palindrome (22061511516022).

The spelling of 20031201303020 in words is "twenty trillion, thirty-one billion, two hundred one million, three hundred three thousand, twenty".

Divisors: 1 2 4 5 10 20 163 326 652 815 1630 3260 6144540277 12289080554 24578161108 30722701385 61445402770 122890805540 1001560065151 2003120130302 4006240260604 5007800325755 10015600651510 20031201303020