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30131102311 = 171772417783
BaseRepresentation
bin11100000011111101…
…000010001001100111
32212202212222120221021
4130003331002021213
5443202030233221
621501514032011
72114451100222
oct340375021147
985685876837
1030131102311
1111862249152
125a0aa18607
132ac25a852b
14165ba145b9
15bb53c4041
hex703f42267

30131102311 has 4 divisors (see below), whose sum is σ = 31903520112. Its totient is φ = 28358684512.

The previous prime is 30131102303. The next prime is 30131102357. The reversal of 30131102311 is 11320113103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11320113103 = 13870777931.

It is a cyclic number.

It is not a de Polignac number, because 30131102311 - 23 = 30131102303 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 (30131102611) 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, 886208875 + ... + 886208908.

It is an arithmetic number, because the mean of its divisors is an integer number (7975880028).

Almost surely, 230131102311 is an apocalyptic number.

30131102311 is a deficient number, since it is larger than the sum of its proper divisors (1772417801).

30131102311 is a wasteful number, since it uses less digits than its factorization.

30131102311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772417800.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 30131102311 its reverse (11320113103), we get a palindrome (41451215414).

The spelling of 30131102311 in words is "thirty billion, one hundred thirty-one million, one hundred two thousand, three hundred eleven".

Divisors: 1 17 1772417783 30131102311