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30223220213 = 67451092839
BaseRepresentation
bin11100001001011100…
…011011110111110101
32220000022022122221102
4130021130123313311
5443344121021323
621515004255445
72116650063434
oct341134336765
986008278842
1030223220213
11118aa24674a
125a35841585
132b086bc474
141669d5311b
15bbd51d328
hex70971bdf5

30223220213 has 4 divisors (see below), whose sum is σ = 30674313120. Its totient is φ = 29772127308.

The previous prime is 30223220201. The next prime is 30223220249. The reversal of 30223220213 is 31202232203.

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: 31202232203 = 111727933959.

It is a cyclic number.

It is not a de Polignac number, because 30223220213 - 26 = 30223220149 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 (30223220113) 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, 225546353 + ... + 225546486.

It is an arithmetic number, because the mean of its divisors is an integer number (7668578280).

Almost surely, 230223220213 is an apocalyptic number.

It is an amenable number.

30223220213 is a deficient number, since it is larger than the sum of its proper divisors (451092907).

30223220213 is an equidigital number, since it uses as much as digits as its factorization.

30223220213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451092906.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 30223220213 its reverse (31202232203), we get a palindrome (61425452416).

The spelling of 30223220213 in words is "thirty billion, two hundred twenty-three million, two hundred twenty thousand, two hundred thirteen".

Divisors: 1 67 451092839 30223220213