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230251091 = 7231430131
BaseRepresentation
bin11011011100101…
…01101001010011
3121001020222010012
431232111221103
5432421013331
634503025135
75464046660
oct1556255123
9531228105
10230251091
11108a75064
126513b1ab
1338919665
1422818a67
151533282b
hexdb95a53

230251091 has 8 divisors (see below), whose sum is σ = 274585344. Its totient is φ = 188777160.

The previous prime is 230251079. The next prime is 230251103. The reversal of 230251091 is 190152032.

It is an interprime number because it is at equal distance from previous prime (230251079) and next prime (230251103).

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 230251091 - 218 = 229988947 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230251001) 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, 714905 + ... + 715226.

It is an arithmetic number, because the mean of its divisors is an integer number (34323168).

Almost surely, 2230251091 is an apocalyptic number.

230251091 is a deficient number, since it is larger than the sum of its proper divisors (44334253).

230251091 is a wasteful number, since it uses less digits than its factorization.

230251091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430161.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 230251091 is about 15174.0268551232. The cubic root of 230251091 is about 612.9154452626.

The spelling of 230251091 in words is "two hundred thirty million, two hundred fifty-one thousand, ninety-one".

Divisors: 1 7 23 161 1430131 10010917 32893013 230251091