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13031276331 = 319228618883
BaseRepresentation
bin11000010001011100…
…10111111100101011
31020122011122102112010
430020232113330223
5203142001320311
65553025251003
7640633010163
oct141056277453
936564572463
1013031276331
1155878a7867
122638193a63
1312c8a028c8
148b898b5a3
1551407dda6
hex308b97f2b

13031276331 has 8 divisors (see below), whose sum is σ = 18289510720. Its totient is φ = 8230279752.

The previous prime is 13031276329. The next prime is 13031276351. The reversal of 13031276331 is 13367213031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13031276331 - 21 = 13031276329 is a prime.

It is a super-2 number, since 2×130312763312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13031276351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114309385 + ... + 114309498.

It is an arithmetic number, because the mean of its divisors is an integer number (2286188840).

Almost surely, 213031276331 is an apocalyptic number.

13031276331 is a deficient number, since it is larger than the sum of its proper divisors (5258234389).

13031276331 is a wasteful number, since it uses less digits than its factorization.

13031276331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228618905.

The product of its (nonzero) digits is 6804, while the sum is 30.

Adding to 13031276331 its reverse (13367213031), we get a palindrome (26398489362).

The spelling of 13031276331 in words is "thirteen billion, thirty-one million, two hundred seventy-six thousand, three hundred thirty-one".

Divisors: 1 3 19 57 228618883 685856649 4343758777 13031276331