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30212000231 = 74316000033
BaseRepresentation
bin11100001000110001…
…101000100111100111
32212222112012122000112
4130020301220213213
5443333233001411
621513524003235
72116452523220
oct341061504747
985875178015
1030212000231
11118a3982a36
125a31b3051b
132b0629151a
141668672247
15bbc553b8b
hex708c689e7

30212000231 has 4 divisors (see below), whose sum is σ = 34528000272. Its totient is φ = 25896000192.

The previous prime is 30212000209. The next prime is 30212000233. The reversal of 30212000231 is 13200021203.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 30212000231 - 230 = 29138258407 is a prime.

It is a super-3 number, since 3×302120002313 (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30212000233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2158000010 + ... + 2158000023.

It is an arithmetic number, because the mean of its divisors is an integer number (8632000068).

Almost surely, 230212000231 is an apocalyptic number.

30212000231 is a deficient number, since it is larger than the sum of its proper divisors (4316000041).

30212000231 is an equidigital number, since it uses as much as digits as its factorization.

30212000231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4316000040.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 30212000231 its reverse (13200021203), we get a palindrome (43412021434).

The spelling of 30212000231 in words is "thirty billion, two hundred twelve million, two hundred thirty-one", and thus it is an aban number.

Divisors: 1 7 4316000033 30212000231