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12317451231 = 316724585731
BaseRepresentation
bin10110111100010110…
…10110001111011111
31011210102110100120110
423132023112033133
5200211231414411
65354125421103
7614144415351
oct133613261737
934712410513
1012317451231
115250975468
12247910a793
131213b628a7
1484bc550d1
154c157a2a6
hex2de2d63df

12317451231 has 8 divisors (see below), whose sum is σ = 16521611904. Its totient is φ = 8162462360.

The previous prime is 12317451227. The next prime is 12317451239. The reversal of 12317451231 is 13215471321.

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

It is a cyclic number.

It is not a de Polignac number, because 12317451231 - 22 = 12317451227 is a prime.

It is a super-2 number, since 2×123174512312 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12317451239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12292365 + ... + 12293366.

It is an arithmetic number, because the mean of its divisors is an integer number (2065201488).

Almost surely, 212317451231 is an apocalyptic number.

12317451231 is a deficient number, since it is larger than the sum of its proper divisors (4204160673).

12317451231 is a wasteful number, since it uses less digits than its factorization.

12317451231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24585901.

The product of its digits is 5040, while the sum is 30.

The spelling of 12317451231 in words is "twelve billion, three hundred seventeen million, four hundred fifty-one thousand, two hundred thirty-one".

Divisors: 1 3 167 501 24585731 73757193 4105817077 12317451231