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102312523 = 4383109263
BaseRepresentation
bin1100001100100…
…10101001001011
321010112000101201
412012102221023
5202143000043
614052525031
72351433145
oct606225113
9233460351
10102312523
1152830a05
122a320777
1318273271
14d833c95
158eaec4d
hex6192a4b

102312523 has 16 divisors (see below), whose sum is σ = 107331840. Its totient is φ = 97451424.

The previous prime is 102312517. The next prime is 102312569. The reversal of 102312523 is 325213201.

It is a cyclic number.

It is not a de Polignac number, because 102312523 - 213 = 102304331 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102312523.

It is not an unprimeable number, because it can be changed into a prime (102312503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 388890 + ... + 389152.

It is an arithmetic number, because the mean of its divisors is an integer number (6708240).

Almost surely, 2102312523 is an apocalyptic number.

102312523 is a deficient number, since it is larger than the sum of its proper divisors (5019317).

102312523 is a wasteful number, since it uses less digits than its factorization.

102312523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 102312523 is about 10114.9652990013. The cubic root of 102312523 is about 467.7095791712.

Adding to 102312523 its reverse (325213201), we get a palindrome (427525724).

The spelling of 102312523 in words is "one hundred two million, three hundred twelve thousand, five hundred twenty-three".

Divisors: 1 43 83 109 263 3569 4687 9047 11309 21829 28667 389021 938647 1232681 2379361 102312523