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13131347847 = 379347159673
BaseRepresentation
bin11000011101011000…
…00111011110000111
31020220010221120211120
430032230013132013
5203343111112342
610011002205023
7643256420652
oct141654073607
936803846746
1013131347847
115629337aa2
1226657b3773
13131366cb17
148c7d9a899
1551cc49aec
hex30eb07787

13131347847 has 16 divisors (see below), whose sum is σ = 17781296640. Its totient is φ = 8618455872.

The previous prime is 13131347837. The next prime is 13131347863. The reversal of 13131347847 is 74874313131.

It is not a de Polignac number, because 13131347847 - 226 = 13064238983 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13131347799 and 13131347808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131347837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2403 + ... + 162075.

It is an arithmetic number, because the mean of its divisors is an integer number (1111331040).

Almost surely, 213131347847 is an apocalyptic number.

13131347847 is a deficient number, since it is larger than the sum of its proper divisors (4649948793).

13131347847 is a wasteful number, since it uses less digits than its factorization.

13131347847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160102.

The product of its digits is 169344, while the sum is 42.

The spelling of 13131347847 in words is "thirteen billion, one hundred thirty-one million, three hundred forty-seven thousand, eight hundred forty-seven".

Divisors: 1 3 79 237 347 1041 27413 82239 159673 479019 12614167 37842501 55406531 166219593 4377115949 13131347847