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230261911 = 1121902991
BaseRepresentation
bin11011011100110…
…00010010010111
3121001021111221221
431232120102113
5432421340121
634503151211
75464123345
oct1556302227
9531244857
10230261911
11108a82200
1265145507
1338921569
142281c995
1515335b41
hexdb98497

230261911 has 6 divisors (see below), whose sum is σ = 253097936. Its totient is φ = 209328900.

The previous prime is 230261897. The next prime is 230261939. The reversal of 230261911 is 119162032.

It is not a de Polignac number, because 230261911 - 215 = 230229143 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 (230261981) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 951375 + ... + 951616.

Almost surely, 2230261911 is an apocalyptic number.

230261911 is a deficient number, since it is larger than the sum of its proper divisors (22836025).

230261911 is a wasteful number, since it uses less digits than its factorization.

230261911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1903013 (or 1903002 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 230261911 is about 15174.3833812119. The cubic root of 230261911 is about 612.9250458559.

The spelling of 230261911 in words is "two hundred thirty million, two hundred sixty-one thousand, nine hundred eleven".

Divisors: 1 11 121 1902991 20932901 230261911