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30205314021 = 353791187177
BaseRepresentation
bin11100001000011000…
…001000001111100101
32212222001121221021010
4130020120020033211
5443330030022041
621513124412433
72116341635001
oct341030101745
985861557233
1030205314021
11118a0126543
125a2b847119
132b04a9009c
141667811701
15bbbb82a16
hex7086083e5

30205314021 has 8 divisors (see below), whose sum is σ = 40274715904. Its totient is φ = 20136394080.

The previous prime is 30205314001. The next prime is 30205314119. The reversal of 30205314021 is 12041350203.

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

It is not a de Polignac number, because 30205314021 - 210 = 30205312997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30205314001) 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, 67785 + ... + 254961.

It is an arithmetic number, because the mean of its divisors is an integer number (5034339488).

Almost surely, 230205314021 is an apocalyptic number.

It is an amenable number.

30205314021 is a deficient number, since it is larger than the sum of its proper divisors (10069401883).

30205314021 is a wasteful number, since it uses less digits than its factorization.

30205314021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240971.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 30205314021 its reverse (12041350203), we get a palindrome (42246664224).

The spelling of 30205314021 in words is "thirty billion, two hundred five million, three hundred fourteen thousand, twenty-one".

Divisors: 1 3 53791 161373 187177 561531 10068438007 30205314021