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30430321123 = 191719221587
BaseRepresentation
bin11100010101110010…
…011101100111100011
32220112202000110222111
4130111302131213203
5444310130233443
621551323220151
72125043314246
oct342562354743
986482013874
1030430321123
11119a6139724
125a93077657
132b3c591897
14168966325d
15bd17cb69d
hex715c9d9e3

30430321123 has 8 divisors (see below), whose sum is σ = 30632325120. Its totient is φ = 30228762120.

The previous prime is 30430321121. The next prime is 30430321157. The reversal of 30430321123 is 32112303403.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30430321123 - 21 = 30430321121 is a prime.

It is a super-2 number, since 2×304303211232 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30430321094 and 30430321103.

It is not an unprimeable number, because it can be changed into a prime (30430321121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26536 + ... + 248122.

It is an arithmetic number, because the mean of its divisors is an integer number (3829040640).

Almost surely, 230430321123 is an apocalyptic number.

30430321123 is a deficient number, since it is larger than the sum of its proper divisors (202003997).

30430321123 is a wasteful number, since it uses less digits than its factorization.

30430321123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222497.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 30430321123 its reverse (32112303403), we get a palindrome (62542624526).

The spelling of 30430321123 in words is "thirty billion, four hundred thirty million, three hundred twenty-one thousand, one hundred twenty-three".

Divisors: 1 191 719 137329 221587 42323117 159321053 30430321123