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230920633 = 1631416691
BaseRepresentation
bin11011100001110…
…01000110111001
3121002111222120001
431300321012321
5433103430013
634525233001
75502535666
oct1560710671
9532458501
10230920633
111093920a9
1265402761
1338ac2338
1422950a6d
1515415ddd
hexdc391b9

230920633 has 4 divisors (see below), whose sum is σ = 232337488. Its totient is φ = 229503780.

The previous prime is 230920619. The next prime is 230920637. The reversal of 230920633 is 336029032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 230920633 - 213 = 230912441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230920637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 708183 + ... + 708508.

It is an arithmetic number, because the mean of its divisors is an integer number (58084372).

Almost surely, 2230920633 is an apocalyptic number.

It is an amenable number.

230920633 is a deficient number, since it is larger than the sum of its proper divisors (1416855).

230920633 is a wasteful number, since it uses less digits than its factorization.

230920633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416854.

The product of its (nonzero) digits is 5832, while the sum is 28.

The square root of 230920633 is about 15196.0729466530. The cubic root of 230920633 is about 613.5089647135.

Adding to 230920633 its reverse (336029032), we get a palindrome (566949665).

The spelling of 230920633 in words is "two hundred thirty million, nine hundred twenty thousand, six hundred thirty-three".

Divisors: 1 163 1416691 230920633