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102203038081 = 457733305101
BaseRepresentation
bin101111100101111000…
…1101001100110000001
3100202210201001021100201
41133023301221212001
53133302434204311
6114541301445201
710245454330024
oct1371361514601
9322721037321
10102203038081
113a386a50231
1217983710801
13983a065b81
144d3788d1bb
1529d28569c1
hex17cbc69981

102203038081 has 8 divisors (see below), whose sum is σ = 102566749544. Its totient is φ = 101839939200.

The previous prime is 102203038079. The next prime is 102203038099. The reversal of 102203038081 is 180830302201.

It can be written as a sum of positive squares in 4 ways, for example, as 89880040000 + 12322998081 = 299800^2 + 111009^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102203038081 - 21 = 102203038079 is a prime.

It is a super-2 number, since 2×1022030380812 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102203038001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182431 + ... + 487531.

It is an arithmetic number, because the mean of its divisors is an integer number (12820843693).

Almost surely, 2102203038081 is an apocalyptic number.

It is an amenable number.

102203038081 is a deficient number, since it is larger than the sum of its proper divisors (363711463).

102203038081 is an equidigital number, since it uses as much as digits as its factorization.

102203038081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306291.

The product of its (nonzero) digits is 2304, while the sum is 28.

The spelling of 102203038081 in words is "one hundred two billion, two hundred three million, thirty-eight thousand, eighty-one".

Divisors: 1 457 733 305101 334981 139431157 223639033 102203038081