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30013122231 = 325351623209
BaseRepresentation
bin11011111100111010…
…111110011010110111
32212110122222120200200
4123330322332122313
5442431324402411
621442101211543
72111516221041
oct337472763267
985418876620
1030013122231
1111801696a54
125997400bb3
132aa400ab31
14164a0a2a91
15ba9d6be56
hex6fcebe6b7

30013122231 has 12 divisors (see below), whose sum is σ = 43360458960. Its totient is φ = 20004976800.

The previous prime is 30013122229. The next prime is 30013122281. The reversal of 30013122231 is 13222131003.

30013122231 is a `hidden beast` number, since 300 + 1 + 312 + 22 + 31 = 666.

It is not a de Polignac number, because 30013122231 - 21 = 30013122229 is a prime.

It is a super-2 number, since 2×300131222312 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30013122281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 263446 + ... + 359763.

It is an arithmetic number, because the mean of its divisors is an integer number (3613371580).

Almost surely, 230013122231 is an apocalyptic number.

30013122231 is a deficient number, since it is larger than the sum of its proper divisors (13347336729).

30013122231 is a wasteful number, since it uses less digits than its factorization.

30013122231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628566 (or 628563 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 30013122231 its reverse (13222131003), we get a palindrome (43235253234).

The spelling of 30013122231 in words is "thirty billion, thirteen million, one hundred twenty-two thousand, two hundred thirty-one".

Divisors: 1 3 9 5351 16053 48159 623209 1869627 5608881 3334791359 10004374077 30013122231