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231203282302131 = 3361373213263749
BaseRepresentation
bin110100100100011100110101…
…100000110011010010110011
31010022121211002021021011002120
4310210130311200303102303
5220301013310232132011
62135421153244245323
766461612603562036
oct6444346540632263
91108554067234076
10231203282302131
1167739841447687
1221b208b3540843
139c014b700c829
1441144273c901d
151bae1dbcaca06
hexd247358334b3

231203282302131 has 8 divisors (see below), whose sum is σ = 308271897570000. Its totient is φ = 154135094284512.

The previous prime is 231203282302121. The next prime is 231203282302151. The reversal of 231203282302131 is 131203282302132.

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

It is not a de Polignac number, because 231203282302131 - 210 = 231203282301107 is a prime.

It is a super-2 number, since 2×2312032823021312 (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231203282302092 and 231203282302101.

It is not an unprimeable number, because it can be changed into a prime (231203282302121) 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 7 ways as a sum of consecutive naturals, for example, 105547756 + ... + 107715993.

It is an arithmetic number, because the mean of its divisors is an integer number (38533987196250).

Almost surely, 2231203282302131 is an apocalyptic number.

231203282302131 is a deficient number, since it is larger than the sum of its proper divisors (77068615267869).

231203282302131 is a wasteful number, since it uses less digits than its factorization.

231203282302131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213625125.

The product of its (nonzero) digits is 20736, while the sum is 33.

Subtracting from 231203282302131 its reverse (131203282302132), we obtain a palindrome (99999999999999).

The spelling of 231203282302131 in words is "two hundred thirty-one trillion, two hundred three billion, two hundred eighty-two million, three hundred two thousand, one hundred thirty-one".

Divisors: 1 3 361373 1084119 213263749 639791247 77067760767377 231203282302131