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103143706 = 251571853
BaseRepresentation
bin1100010010111…
…01100100011010
321012002020120021
412021131210122
5202401044311
614122421054
72361464341
oct611354432
9235066507
10103143706
1153249436
122a66178a
13184a46a3
14d9acb58
1590c6171
hex625d91a

103143706 has 4 divisors (see below), whose sum is σ = 154715562. Its totient is φ = 51571852.

The previous prime is 103143701. The next prime is 103143731. The reversal of 103143706 is 607341301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 607341301 = 786763043.

It can be written as a sum of positive squares in only one way, i.e., 72948681 + 30195025 = 8541^2 + 5495^2 .

It is not an unprimeable number, because it can be changed into a prime (103143701) 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 as a sum of consecutive naturals, namely, 25785925 + ... + 25785928.

Almost surely, 2103143706 is an apocalyptic number.

103143706 is a deficient number, since it is larger than the sum of its proper divisors (51571856).

103143706 is an equidigital number, since it uses as much as digits as its factorization.

103143706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51571855.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 103143706 is about 10155.9689838045. The cubic root of 103143706 is about 468.9727163037.

The spelling of 103143706 in words is "one hundred three million, one hundred forty-three thousand, seven hundred six".

Divisors: 1 2 51571853 103143706