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230102613 = 3413218521
BaseRepresentation
bin11011011011100…
…01011001010101
3121000222102110000
431231301121111
5432401240423
634455521513
75462561046
oct1555613125
9530872400
10230102613
11108983554
1265089299
1338896bc0
14227ba8cd
1515303843
hexdb71655

230102613 has 20 divisors (see below), whose sum is σ = 370176268. Its totient is φ = 141600960.

The previous prime is 230102591. The next prime is 230102623. The reversal of 230102613 is 316201032.

It can be written as a sum of positive squares in 2 ways, for example, as 10381284 + 219721329 = 3222^2 + 14823^2 .

It is not a de Polignac number, because 230102613 - 28 = 230102357 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 (230102623) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 108208 + ... + 110313.

Almost surely, 2230102613 is an apocalyptic number.

It is an amenable number.

230102613 is a deficient number, since it is larger than the sum of its proper divisors (140073655).

230102613 is a wasteful number, since it uses less digits than its factorization.

230102613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218546 (or 218537 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 230102613 is about 15169.1335612816. The cubic root of 230102613 is about 612.7836702403.

Adding to 230102613 its reverse (316201032), we get a palindrome (546303645).

The spelling of 230102613 in words is "two hundred thirty million, one hundred two thousand, six hundred thirteen".

Divisors: 1 3 9 13 27 39 81 117 351 1053 218521 655563 1966689 2840773 5900067 8522319 17700201 25566957 76700871 230102613