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30355150081 = 282191075699
BaseRepresentation
bin11100010001010011…
…101101010100000001
32220100111120101200211
4130101103231110001
5444131404300311
621540040114121
72123141342554
oct342123552401
986314511624
1030355150081
11119677665a3
125a71a65941
132b29b32489
14167d69669b
15bc9dcd821
hex7114ed501

30355150081 has 4 divisors (see below), whose sum is σ = 30356254000. Its totient is φ = 30354046164.

The previous prime is 30355150073. The next prime is 30355150087. The reversal of 30355150081 is 18005155303.

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, and also an emirpimes, since its reverse is a distinct semiprime: 18005155303 = 37486625819.

It is a cyclic number.

It is not a de Polignac number, because 30355150081 - 23 = 30355150073 is a prime.

It is a super-2 number, since 2×303551500812 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30355150087) 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, 509631 + ... + 566068.

It is an arithmetic number, because the mean of its divisors is an integer number (7589063500).

Almost surely, 230355150081 is an apocalyptic number.

It is an amenable number.

30355150081 is a deficient number, since it is larger than the sum of its proper divisors (1103919).

30355150081 is a wasteful number, since it uses less digits than its factorization.

30355150081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103918.

The product of its (nonzero) digits is 9000, while the sum is 31.

The spelling of 30355150081 in words is "thirty billion, three hundred fifty-five million, one hundred fifty thousand, eighty-one".

Divisors: 1 28219 1075699 30355150081