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68101321 = 232960927
BaseRepresentation
bin1000000111100…
…10010011001001
311202010220110011
410003302103021
5114413220241
610431351521
71454565061
oct403622311
9152126404
1068101321
1135494592
121a9825a1
1311155552
14908a3a1
155ea3281
hex40f24c9

68101321 has 4 divisors (see below), whose sum is σ = 71062272. Its totient is φ = 65140372.

The previous prime is 68101307. The next prime is 68101331. The reversal of 68101321 is 12310186.

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 68101321 - 223 = 59712713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68101292 and 68101301.

It is not an unprimeable number, because it can be changed into a prime (68101331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1480441 + ... + 1480486.

It is an arithmetic number, because the mean of its divisors is an integer number (17765568).

Almost surely, 268101321 is an apocalyptic number.

It is an amenable number.

68101321 is a deficient number, since it is larger than the sum of its proper divisors (2960951).

68101321 is a wasteful number, since it uses less digits than its factorization.

68101321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2960950.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 68101321 is about 8252.3524524829. The cubic root of 68101321 is about 408.3681337919.

The spelling of 68101321 in words is "sixty-eight million, one hundred one thousand, three hundred twenty-one".

Divisors: 1 23 2960927 68101321