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230236257 = 3791138597
BaseRepresentation
bin11011011100100…
…10000001100001
3121001020012202210
431232102001201
5432420030012
634502432333
75463655506
oct1556220141
9531205683
10230236257
11108a649a9
12651326a9
1338912994
14228134ad
151532d23c
hexdb92061

230236257 has 16 divisors (see below), whose sum is σ = 313655040. Its totient is φ = 150189312.

The previous prime is 230236247. The next prime is 230236289. The reversal of 230236257 is 752632032.

It is not a de Polignac number, because 230236257 - 24 = 230236241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (230236247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22483 + ... + 31079.

It is an arithmetic number, because the mean of its divisors is an integer number (19603440).

Almost surely, 2230236257 is an apocalyptic number.

It is an amenable number.

230236257 is a deficient number, since it is larger than the sum of its proper divisors (83418783).

230236257 is a wasteful number, since it uses less digits than its factorization.

230236257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8792.

The product of its (nonzero) digits is 15120, while the sum is 30.

The square root of 230236257 is about 15173.5380514895. The cubic root of 230236257 is about 612.9022825556.

Adding to 230236257 its reverse (752632032), we get a palindrome (982868289).

The spelling of 230236257 in words is "two hundred thirty million, two hundred thirty-six thousand, two hundred fifty-seven".

Divisors: 1 3 79 113 237 339 8597 8927 25791 26781 679163 971461 2037489 2914383 76745419 230236257