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320030023 = 990132323
BaseRepresentation
bin10011000100110…
…100010101000111
3211022012012122211
4103010310111013
51123411430043
651431204251
710634132065
oct2304642507
9738165584
10320030023
11154715325
128b216687
13513c1aa1
1430709035
151d168a9d
hex13134547

320030023 has 4 divisors (see below), whose sum is σ = 320072248. Its totient is φ = 319987800.

The previous prime is 320029991. The next prime is 320030033.

320030023 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 320030023 - 25 = 320029991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320029985 and 320030012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320030033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6261 + ... + 26062.

It is an arithmetic number, because the mean of its divisors is an integer number (80018062).

Almost surely, 2320030023 is an apocalyptic number.

320030023 is a deficient number, since it is larger than the sum of its proper divisors (42225).

320030023 is an equidigital number, since it uses as much as digits as its factorization.

320030023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42224.

The product of its (nonzero) digits is 108, while the sum is 13.

The square root of 320030023 is about 17889.3829686773. The cubic root of 320030023 is about 684.0117690883.

The spelling of 320030023 in words is "three hundred twenty million, thirty thousand, twenty-three".

Divisors: 1 9901 32323 320030023