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230911293 = 3181425251
BaseRepresentation
bin11011100001101…
…10110100111101
3121002111111202010
431300312310331
5433103130133
634525121433
75502466524
oct1560666475
9532444663
10230911293
11109386088
12653b9279
1338abb002
142294b4bb
1515413263
hexdc36d3d

230911293 has 8 divisors (see below), whose sum is σ = 309583456. Its totient is φ = 153090000.

The previous prime is 230911223. The next prime is 230911297. The reversal of 230911293 is 392119032.

It is a happy number.

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

It is not a de Polignac number, because 230911293 - 212 = 230907197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 230911293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230911297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212083 + ... + 213168.

It is an arithmetic number, because the mean of its divisors is an integer number (38697932).

Almost surely, 2230911293 is an apocalyptic number.

It is an amenable number.

230911293 is a deficient number, since it is larger than the sum of its proper divisors (78672163).

230911293 is a wasteful number, since it uses less digits than its factorization.

230911293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425435.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 230911293 is about 15195.7656273055. The cubic root of 230911293 is about 613.5006931111.

The spelling of 230911293 in words is "two hundred thirty million, nine hundred eleven thousand, two hundred ninety-three".

Divisors: 1 3 181 543 425251 1275753 76970431 230911293