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230231211 = 3736729873
BaseRepresentation
bin11011011100100…
…00110010101011
3121001012221211220
431232100302223
5432414344321
634502353123
75463635010
oct1556206253
9531187756
10230231211
11108a61131
126512b7a3
13389105b2
1422811707
151532b9c6
hexdb90cab

230231211 has 16 divisors (see below), whose sum is σ = 351796224. Its totient is φ = 131197824.

The previous prime is 230231171. The next prime is 230231233. The reversal of 230231211 is 112132032.

It is not a de Polignac number, because 230231211 - 27 = 230231083 is a prime.

It is a super-3 number, since 3×2302312113 (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (230231251) 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, 7230 + ... + 22643.

It is an arithmetic number, because the mean of its divisors is an integer number (21987264).

Almost surely, 2230231211 is an apocalyptic number.

230231211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

230231211 is a deficient number, since it is larger than the sum of its proper divisors (121565013).

230231211 is a wasteful number, since it uses less digits than its factorization.

230231211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30250.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 230231211 is about 15173.3717742630. The cubic root of 230231211 is about 612.8978049412.

Adding to 230231211 its reverse (112132032), we get a palindrome (342363243).

The spelling of 230231211 in words is "two hundred thirty million, two hundred thirty-one thousand, two hundred eleven".

Divisors: 1 3 7 21 367 1101 2569 7707 29873 89619 209111 627333 10963391 32890173 76743737 230231211