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30123123323 = 66403453641
BaseRepresentation
bin11100000011011110…
…100110001001111011
32212202022222012211012
4130003132212021323
5443143004421243
621501031024135
72114323215656
oct340336461173
985668865735
1030123123323
1111858799447
125a0820b04b
132ac0a43837
14165a93889d
15bb4849d18
hex7037a627b

30123123323 has 4 divisors (see below), whose sum is σ = 30123643368. Its totient is φ = 30122603280.

The previous prime is 30123123307. The next prime is 30123123343. The reversal of 30123123323 is 32332132103.

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 30123123323 - 24 = 30123123307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30123123343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160418 + ... + 293223.

It is an arithmetic number, because the mean of its divisors is an integer number (7530910842).

Almost surely, 230123123323 is an apocalyptic number.

30123123323 is a deficient number, since it is larger than the sum of its proper divisors (520045).

30123123323 is an equidigital number, since it uses as much as digits as its factorization.

30123123323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520044.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 30123123323 its reverse (32332132103), we get a palindrome (62455255426).

The spelling of 30123123323 in words is "thirty billion, one hundred twenty-three million, one hundred twenty-three thousand, three hundred twenty-three".

Divisors: 1 66403 453641 30123123323