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103907143 = 195468797
BaseRepresentation
bin1100011000101…
…11111101000111
321020112000210201
412030113331013
5203100012033
614151031331
72401124164
oct614277507
9236460721
10103907143
115371aa7a
122a96b547
13186b1022
14db2b06b
1591c747d
hex6317f47

103907143 has 4 divisors (see below), whose sum is σ = 109375960. Its totient is φ = 98438328.

The previous prime is 103907117. The next prime is 103907149. The reversal of 103907143 is 341709301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341709301 = 1021334681.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-103907143 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 (103907149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2734380 + ... + 2734417.

It is an arithmetic number, because the mean of its divisors is an integer number (27343990).

Almost surely, 2103907143 is an apocalyptic number.

103907143 is a deficient number, since it is larger than the sum of its proper divisors (5468817).

103907143 is an equidigital number, since it uses as much as digits as its factorization.

103907143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5468816.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 103907143 is about 10193.4853215179. The cubic root of 103907143 is about 470.1269356860.

The spelling of 103907143 in words is "one hundred three million, nine hundred seven thousand, one hundred forty-three".

Divisors: 1 19 5468797 103907143