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102103131210 = 23513724842611
BaseRepresentation
bin101111100010111010…
…0100010010001001010
3100202112202001110220020
41133011310202101022
53133101400144320
6114523332241310
710243132203243
oct1370564422112
9322482043806
10102103131210
113a335612773
1217956170236
139822455892
144d284c3cca
1529c8bbe940
hex17c5d2244a

102103131210 has 32 divisors (see below), whose sum is σ = 246836192832. Its totient is φ = 27028759680.

The previous prime is 102103131199. The next prime is 102103131211. The reversal of 102103131210 is 12131301201.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 102103131210.

It is not an unprimeable number, because it can be changed into a prime (102103131211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12417196 + ... + 12425415.

It is an arithmetic number, because the mean of its divisors is an integer number (7713631026).

Almost surely, 2102103131210 is an apocalyptic number.

102103131210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102103131210 is an abundant number, since it is smaller than the sum of its proper divisors (144733061622).

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

102103131210 is a wasteful number, since it uses less digits than its factorization.

102103131210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24842758.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 102103131210 its reverse (12131301201), we get a palindrome (114234432411).

The spelling of 102103131210 in words is "one hundred two billion, one hundred three million, one hundred thirty-one thousand, two hundred ten".

Divisors: 1 2 3 5 6 10 15 30 137 274 411 685 822 1370 2055 4110 24842611 49685222 74527833 124213055 149055666 248426110 372639165 745278330 3403437707 6806875414 10210313121 17017188535 20420626242 34034377070 51051565605 102103131210