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12831601571 is a prime number
BaseRepresentation
bin10111111001101001…
…01011001110100011
31020010020220220020122
423330310223032203
5202234342222241
65521133430455
7632656546055
oct137464531643
936106826218
1012831601571
1154951171a8
1225a133b42b
131296530669
1489a2518d5
1550178b04b
hex2fcd2b3a3

12831601571 has 2 divisors, whose sum is σ = 12831601572. Its totient is φ = 12831601570.

The previous prime is 12831601543. The next prime is 12831601589. The reversal of 12831601571 is 17510613821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12831601571 - 26 = 12831601507 is a prime.

It is not a weakly prime, because it can be changed into another prime (12831603571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6415800785 + 6415800786.

It is an arithmetic number, because the mean of its divisors is an integer number (6415800786).

Almost surely, 212831601571 is an apocalyptic number.

12831601571 is a deficient number, since it is larger than the sum of its proper divisors (1).

12831601571 is an equidigital number, since it uses as much as digits as its factorization.

12831601571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 35.

The spelling of 12831601571 in words is "twelve billion, eight hundred thirty-one million, six hundred one thousand, five hundred seventy-one".