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231864093253 = 13171049158793
BaseRepresentation
bin1101011111110000101…
…1010100101001000101
3211011111000012100002101
43113330023110221011
512244324201441003
6254303352112101
722515544163032
oct3277413245105
9734430170071
10231864093253
118a373266071
1238b2a995631
1318b31955420
14b317d28389
156070a6711d
hex35fc2d4a45

231864093253 has 8 divisors (see below), whose sum is σ = 264388016088. Its totient is φ = 201438488064.

The previous prime is 231864093229. The next prime is 231864093323. The reversal of 231864093253 is 352390468132.

It can be written as a sum of positive squares in 4 ways, for example, as 96309053569 + 135555039684 = 310337^2 + 368178^2 .

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 231864093253 - 229 = 231327222341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231864093053) 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, 524579176 + ... + 524579617.

It is an arithmetic number, because the mean of its divisors is an integer number (33048502011).

Almost surely, 2231864093253 is an apocalyptic number.

It is an amenable number.

231864093253 is a deficient number, since it is larger than the sum of its proper divisors (32523922835).

231864093253 is a wasteful number, since it uses less digits than its factorization.

231864093253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049158823.

The product of its (nonzero) digits is 933120, while the sum is 46.

The spelling of 231864093253 in words is "two hundred thirty-one billion, eight hundred sixty-four million, ninety-three thousand, two hundred fifty-three".

Divisors: 1 13 17 221 1049158793 13639064309 17835699481 231864093253