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30212013203 = 38378882541
BaseRepresentation
bin11100001000110001…
…101011110010010011
32212222112020021210222
4130020301223302103
5443333233410303
621513524143255
72116452606101
oct341061536223
985875207728
1030212013203
11118a3991759
125a31b37b2b
132b062973b8
141668676c71
15bbc557938
hex708c6bc93

30212013203 has 4 divisors (see below), whose sum is σ = 30290896128. Its totient is φ = 30133130280.

The previous prime is 30212013191. The next prime is 30212013217. The reversal of 30212013203 is 30231021203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30231021203 = 291042449007.

It is a cyclic number.

It is not a de Polignac number, because 30212013203 - 24 = 30212013187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30212013283) 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, 39440888 + ... + 39441653.

It is an arithmetic number, because the mean of its divisors is an integer number (7572724032).

Almost surely, 230212013203 is an apocalyptic number.

30212013203 is a deficient number, since it is larger than the sum of its proper divisors (78882925).

30212013203 is an equidigital number, since it uses as much as digits as its factorization.

30212013203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78882924.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 30212013203 its reverse (30231021203), we get a palindrome (60443034406).

The spelling of 30212013203 in words is "thirty billion, two hundred twelve million, thirteen thousand, two hundred three".

Divisors: 1 383 78882541 30212013203