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30111231243 = 312779032103
BaseRepresentation
bin11100000010110001…
…001110110100001011
32212201111121000221210
4130002301032310023
5443131433344433
621455524104203
72114120146122
oct340261166413
985644530853
1030111231243
1111852006785
125a04235063
132abb43b9c2
141659120ab9
15bb379b463
hex702c4ed0b

30111231243 has 8 divisors (see below), whose sum is σ = 40464437248. Its totient is φ = 19916089704.

The previous prime is 30111231229. The next prime is 30111231247. The reversal of 30111231243 is 34213211103.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30111231243 - 28 = 30111230987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30111231247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39515671 + ... + 39516432.

It is an arithmetic number, because the mean of its divisors is an integer number (5058054656).

Almost surely, 230111231243 is an apocalyptic number.

30111231243 is a deficient number, since it is larger than the sum of its proper divisors (10353206005).

30111231243 is a wasteful number, since it uses less digits than its factorization.

30111231243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79032233.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 30111231243 its reverse (34213211103), we get a palindrome (64324442346).

The spelling of 30111231243 in words is "thirty billion, one hundred eleven million, two hundred thirty-one thousand, two hundred forty-three".

Divisors: 1 3 127 381 79032103 237096309 10037077081 30111231243