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102384931 = 1117547513
BaseRepresentation
bin1100001101001…
…00010100100011
321010122200201111
412012210110203
5202202304211
614054244151
72352154225
oct606442443
9233580644
10102384931
1152880350
122a356657
131829a1cc
14d852415
158ec6421
hex61a4523

102384931 has 8 divisors (see below), whose sum is σ = 118263024. Its totient is φ = 87601920.

The previous prime is 102384929. The next prime is 102384943. The reversal of 102384931 is 139483201.

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 102384931 - 21 = 102384929 is a prime.

It is a super-2 number, since 2×1023849312 = 20965348191749522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102384893 and 102384902.

It is not an unprimeable number, because it can be changed into a prime (102384131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273570 + ... + 273943.

It is an arithmetic number, because the mean of its divisors is an integer number (14782878).

Almost surely, 2102384931 is an apocalyptic number.

102384931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

102384931 is a deficient number, since it is larger than the sum of its proper divisors (15878093).

102384931 is a wasteful number, since it uses less digits than its factorization.

102384931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547541.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 102384931 is about 10118.5439169873. The cubic root of 102384931 is about 467.8198880178.

The spelling of 102384931 in words is "one hundred two million, three hundred eighty-four thousand, nine hundred thirty-one".

Divisors: 1 11 17 187 547513 6022643 9307721 102384931