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102839331 = 3717328307
BaseRepresentation
bin1100010000100…
…11010000100011
321011111210001010
412020103100203
5202311324311
614112112003
72356056060
oct610232043
9234453033
10102839331
1153060791
122a535603
13183c8c9a
14d92dc67
159065da6
hex6213423

102839331 has 16 divisors (see below), whose sum is σ = 157618944. Its totient is φ = 58423584.

The previous prime is 102839329. The next prime is 102839413. The reversal of 102839331 is 133938201.

It is not a de Polignac number, because 102839331 - 21 = 102839329 is a prime.

It is a super-2 number, since 2×1028393312 = 21151856001055122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102839131) 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, 10521 + ... + 17786.

It is an arithmetic number, because the mean of its divisors is an integer number (9851184).

Almost surely, 2102839331 is an apocalyptic number.

102839331 is a deficient number, since it is larger than the sum of its proper divisors (54779613).

102839331 is a wasteful number, since it uses less digits than its factorization.

102839331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28490.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 102839331 is about 10140.9728823225. The cubic root of 102839331 is about 468.5109521049.

The spelling of 102839331 in words is "one hundred two million, eight hundred thirty-nine thousand, three hundred thirty-one".

Divisors: 1 3 7 21 173 519 1211 3633 28307 84921 198149 594447 4897111 14691333 34279777 102839331