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313131120212323 = 7171933726017597
BaseRepresentation
bin100011100110010101000010…
…1001100000011100101100011
31112001201001011011021001011201
41013030222011030003211203
5312020320013233243243
63025550241210022031
7122645656031614120
oct10714520514034543
91461631134231151
10313131120212323
1190856187059456
122b152aaa717917
13105951a407168a
1457478aca07747
1526303d438404d
hex11cca85303963

313131120212323 has 8 divisors (see below), whose sum is σ = 357864359280992. Its totient is φ = 268397936617536.

The previous prime is 313131120212233. The next prime is 313131120212347. The reversal of 313131120212323 is 323212021131313.

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 313131120212323 - 225 = 313131086657891 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313131120212291 and 313131120212300.

It is not an unprimeable number, because it can be changed into a prime (313131120213323) 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, 973440 + ... + 25044157.

It is an arithmetic number, because the mean of its divisors is an integer number (44733044910124).

Almost surely, 2313131120212323 is an apocalyptic number.

313131120212323 is a deficient number, since it is larger than the sum of its proper divisors (44733239068669).

313131120212323 is a wasteful number, since it uses less digits than its factorization.

313131120212323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27736941.

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 313131120212323 its reverse (323212021131313), we get a palindrome (636343141343636).

The spelling of 313131120212323 in words is "three hundred thirteen trillion, one hundred thirty-one billion, one hundred twenty million, two hundred twelve thousand, three hundred twenty-three".

Divisors: 1 7 1719337 12035359 26017597 182123179 44733017173189 313131120212323