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13431550242321 = 321492394471369
BaseRepresentation
bin1100001101110100011011…
…0001111110111000010001
31202120001011211102021022200
43003131012301332320101
53230030303330223241
644322211411553413
72554253223213231
oct303350661767021
952501154367280
1013431550242321
114309319a52122
12160b15abbb869
137657888c25a3
1434613a493cc1
151845bad2a4b6
hexc3746c7ee11

13431550242321 has 6 divisors (see below), whose sum is σ = 19401128127810. Its totient is φ = 8954366828208.

The previous prime is 13431550242269. The next prime is 13431550242377. The reversal of 13431550242321 is 12324205513431.

13431550242321 is a `hidden beast` number, since 1 + 3 + 4 + 31 + 550 + 2 + 42 + 32 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6815028734721 + 6616521507600 = 2610561^2 + 2572260^2 .

It is not a de Polignac number, because 13431550242321 - 210 = 13431550241297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13431550246321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 746197235676 + ... + 746197235693.

It is an arithmetic number, because the mean of its divisors is an integer number (3233521354635).

Almost surely, 213431550242321 is an apocalyptic number.

It is an amenable number.

13431550242321 is a deficient number, since it is larger than the sum of its proper divisors (5969577885489).

13431550242321 is a wasteful number, since it uses less digits than its factorization.

13431550242321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492394471375 (or 1492394471372 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 13431550242321 its reverse (12324205513431), we get a palindrome (25755755755752).

The spelling of 13431550242321 in words is "thirteen trillion, four hundred thirty-one billion, five hundred fifty million, two hundred forty-two thousand, three hundred twenty-one".

Divisors: 1 3 9 1492394471369 4477183414107 13431550242321