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30031223101 = 112730111191
BaseRepresentation
bin11011111110000000…
…000001100100111101
32212111221001012102021
4123332000001210331
5443000443114401
621443545200141
72112126120205
oct337600014475
985457035367
1030031223101
111181092a450
1259a1490051
132aa79a79c9
14164c655405
15bab7452a1
hex6fe00193d

30031223101 has 4 divisors (see below), whose sum is σ = 32761334304. Its totient is φ = 27301111900.

The previous prime is 30031223029. The next prime is 30031223147. The reversal of 30031223101 is 10132213003.

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: 10132213003 = 11921110273.

It is a cyclic number.

It is not a de Polignac number, because 30031223101 - 219 = 30030698813 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 (30031223161) 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, 1365055585 + ... + 1365055606.

It is an arithmetic number, because the mean of its divisors is an integer number (8190333576).

Almost surely, 230031223101 is an apocalyptic number.

It is an amenable number.

30031223101 is a deficient number, since it is larger than the sum of its proper divisors (2730111203).

30031223101 is a wasteful number, since it uses less digits than its factorization.

30031223101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2730111202.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 30031223101 its reverse (10132213003), we get a palindrome (40163436104).

The spelling of 30031223101 in words is "thirty billion, thirty-one million, two hundred twenty-three thousand, one hundred one".

Divisors: 1 11 2730111191 30031223101