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1308307871 = 13195296793
BaseRepresentation
bin100110111111011…
…0011000110011111
310101011210221000002
41031332303012133
510134411322441
6333453324515
744264301443
oct11576630637
93334727002
101308307871
11611562082
1230619673b
1317b086590
14c5a84823
1579cd1b9b
hex4dfb319f

1308307871 has 8 divisors (see below), whose sum is σ = 1483102320. Its totient is φ = 1144107072.

The previous prime is 1308307867. The next prime is 1308307883. The reversal of 1308307871 is 1787038031.

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 1308307871 - 22 = 1308307867 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 (1308307771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2648150 + ... + 2648643.

It is an arithmetic number, because the mean of its divisors is an integer number (185387790).

Almost surely, 21308307871 is an apocalyptic number.

1308307871 is a deficient number, since it is larger than the sum of its proper divisors (174794449).

1308307871 is a wasteful number, since it uses less digits than its factorization.

1308307871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5296825.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 1308307871 is about 36170.5387159218. The cubic root of 1308307871 is about 1093.7128585766.

The spelling of 1308307871 in words is "one billion, three hundred eight million, three hundred seven thousand, eight hundred seventy-one".

Divisors: 1 13 19 247 5296793 68858309 100639067 1308307871