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30001313213 = 274910913537
BaseRepresentation
bin11011111100001101…
…111011010110111101
32212102211202121202122
4123330031323112331
5442420314010323
621441000132325
72111313645314
oct337415732675
985384677678
1030001313213
11117a5a60733
1259934670a5
132aa1734a51
1416486ab27b
15ba8cd7ec8
hex6fc37b5bd

30001313213 has 4 divisors (see below), whose sum is σ = 30012229500. Its totient is φ = 29990396928.

The previous prime is 30001313201. The next prime is 30001313299. The reversal of 30001313213 is 31231310003.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17015115364 + 12986197849 = 130442^2 + 113957^2 .

It is a cyclic number.

It is not a de Polignac number, because 30001313213 - 26 = 30001313149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30001313191 and 30001313200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30001313113) 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, 5454020 + ... + 5459517.

It is an arithmetic number, because the mean of its divisors is an integer number (7503057375).

Almost surely, 230001313213 is an apocalyptic number.

It is an amenable number.

30001313213 is a deficient number, since it is larger than the sum of its proper divisors (10916287).

30001313213 is a wasteful number, since it uses less digits than its factorization.

30001313213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10916286.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 30001313213 its reverse (31231310003), we get a palindrome (61232623216).

The spelling of 30001313213 in words is "thirty billion, one million, three hundred thirteen thousand, two hundred thirteen".

Divisors: 1 2749 10913537 30001313213