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230291099 = 4872971
BaseRepresentation
bin11011011100111…
…11011010011011
3121001022222222222
431232133122123
5432423303344
634503534255
75464304423
oct1556373233
9531288888
10230291099
11108aa2125
126515a38b
133893192c
1422829483
151533e5ee
hexdb9f69b

230291099 has 6 divisors (see below), whose sum is σ = 231002604. Its totient is φ = 229581540.

The previous prime is 230291069. The next prime is 230291119. The reversal of 230291099 is 990192032.

It is not a de Polignac number, because 230291099 - 220 = 229242523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230291029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 236684 + ... + 237654.

It is an arithmetic number, because the mean of its divisors is an integer number (38500434).

Almost surely, 2230291099 is an apocalyptic number.

230291099 is a deficient number, since it is larger than the sum of its proper divisors (711505).

230291099 is an frugal number, since it uses more digits than its factorization.

230291099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1945 (or 1458 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 230291099 is about 15175.3451031599. The cubic root of 230291099 is about 612.9509428881.

The spelling of 230291099 in words is "two hundred thirty million, two hundred ninety-one thousand, ninety-nine".

Divisors: 1 487 971 237169 472877 230291099