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102831079 = 1317465299
BaseRepresentation
bin1100010000100…
…01001111100111
321011111100201111
412020101033213
5202311043304
614112005451
72356023031
oct610211747
9234440644
10102831079
115305556a
122a530887
13183c52c0
14d92ac51
159063704
hex62113e7

102831079 has 8 divisors (see below), whose sum is σ = 117255600. Its totient is φ = 89337216.

The previous prime is 102831073. The next prime is 102831083. The reversal of 102831079 is 970138201.

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 102831079 - 27 = 102830951 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 102831079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102831073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232429 + ... + 232870.

It is an arithmetic number, because the mean of its divisors is an integer number (14656950).

Almost surely, 2102831079 is an apocalyptic number.

102831079 is a deficient number, since it is larger than the sum of its proper divisors (14424521).

102831079 is a wasteful number, since it uses less digits than its factorization.

102831079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465329.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 102831079 is about 10140.5660098438. The cubic root of 102831079 is about 468.4984204021.

The spelling of 102831079 in words is "one hundred two million, eight hundred thirty-one thousand, seventy-nine".

Divisors: 1 13 17 221 465299 6048887 7910083 102831079