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13102131442 = 26551065721
BaseRepresentation
bin11000011001111001…
…01010100011110010
31020211002222020110111
430030330222203302
5203313121201232
610004040051534
7642453164641
oct141474524362
936732866414
1013102131442
1156138a2304
122657a63baa
13130a5b06ca
148c4153358
1551a3c8047
hex30cf2a8f2

13102131442 has 4 divisors (see below), whose sum is σ = 19653197166. Its totient is φ = 6551065720.

The previous prime is 13102131437. The next prime is 13102131443. The reversal of 13102131442 is 24413120131.

13102131442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24413120131 = 197912336089.

It can be written as a sum of positive squares in only one way, i.e., 12964327321 + 137804121 = 113861^2 + 11739^2 .

It is not an unprimeable number, because it can be changed into a prime (13102131443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3275532859 + ... + 3275532862.

Almost surely, 213102131442 is an apocalyptic number.

13102131442 is a deficient number, since it is larger than the sum of its proper divisors (6551065724).

13102131442 is an equidigital number, since it uses as much as digits as its factorization.

13102131442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6551065723.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 13102131442 its reverse (24413120131), we get a palindrome (37515251573).

The spelling of 13102131442 in words is "thirteen billion, one hundred two million, one hundred thirty-one thousand, four hundred forty-two".

Divisors: 1 2 6551065721 13102131442