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102331385 = 5132835563
BaseRepresentation
bin1100001100101…
…11001111111001
321010112222021022
412012113033321
5202144101020
614053152225
72351542142
oct606271771
9233488238
10102331385
11528440a2
122a32b675
131827ba20
14d83aac9
158eb5625
hex61973f9

102331385 has 16 divisors (see below), whose sum is σ = 132734784. Its totient is φ = 75287232.

The previous prime is 102331379. The next prime is 102331409. The reversal of 102331385 is 583133201.

It is a cyclic number.

It is not a de Polignac number, because 102331385 - 212 = 102327289 is a prime.

It is a Curzon 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, 15614 + ... + 21176.

It is an arithmetic number, because the mean of its divisors is an integer number (8295924).

Almost surely, 2102331385 is an apocalyptic number.

It is an amenable number.

102331385 is a deficient number, since it is larger than the sum of its proper divisors (30403399).

102331385 is a wasteful number, since it uses less digits than its factorization.

102331385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5864.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 102331385 is about 10115.8976368882. The cubic root of 102331385 is about 467.7383192046.

Adding to 102331385 its reverse (583133201), we get a palindrome (685464586).

The spelling of 102331385 in words is "one hundred two million, three hundred thirty-one thousand, three hundred eighty-five".

Divisors: 1 5 13 65 283 1415 3679 5563 18395 27815 72319 361595 1574329 7871645 20466277 102331385