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102912911 = 1941132109
BaseRepresentation
bin1100010001001…
…01001110001111
321011122111222022
412020211032033
5202321203121
614113440355
72356513433
oct610451617
9234574868
10102912911
1153100aa2
122a5700bb
131842361a
14d94c9c3
15907caab
hex622538f

102912911 has 8 divisors (see below), whose sum is σ = 110972400. Its totient is φ = 95117760.

The previous prime is 102912907. The next prime is 102912919. The reversal of 102912911 is 119219201.

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 102912911 - 22 = 102912907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102912919) 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, 65276 + ... + 66833.

It is an arithmetic number, because the mean of its divisors is an integer number (13871550).

Almost surely, 2102912911 is an apocalyptic number.

102912911 is a deficient number, since it is larger than the sum of its proper divisors (8059489).

102912911 is a wasteful number, since it uses less digits than its factorization.

102912911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132169.

The product of its (nonzero) digits is 324, while the sum is 26.

The square root of 102912911 is about 10144.6000906886. The cubic root of 102912911 is about 468.6226629880.

It can be divided in two parts, 102912 and 911, that added together give a cube (103823 = 473).

The spelling of 102912911 in words is "one hundred two million, nine hundred twelve thousand, nine hundred eleven".

Divisors: 1 19 41 779 132109 2510071 5416469 102912911