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230403253 = 1931391177
BaseRepresentation
bin11011011101110…
…10110010110101
3121001112200211211
431232322302311
5432440401003
634510201421
75465252413
oct1556726265
9531480754
10230403253
11109069413
12651b3271
13389709b2
14228582b3
151536296d
hexdbbacb5

230403253 has 8 divisors (see below), whose sum is σ = 250353920. Its totient is φ = 211235040.

The previous prime is 230403241. The next prime is 230403281. The reversal of 230403253 is 352304032.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-230403253 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 (230403233) 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, 195000 + ... + 196177.

It is an arithmetic number, because the mean of its divisors is an integer number (31294240).

Almost surely, 2230403253 is an apocalyptic number.

It is an amenable number.

230403253 is a deficient number, since it is larger than the sum of its proper divisors (19950667).

230403253 is a wasteful number, since it uses less digits than its factorization.

230403253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391227.

The product of its (nonzero) digits is 2160, while the sum is 22.

The square root of 230403253 is about 15179.0399235261. The cubic root of 230403253 is about 613.0504310918.

Adding to 230403253 its reverse (352304032), we get a palindrome (582707285).

The spelling of 230403253 in words is "two hundred thirty million, four hundred three thousand, two hundred fifty-three".

Divisors: 1 19 31 589 391177 7432363 12126487 230403253