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30110131243 = 231309136141
BaseRepresentation
bin11100000010101101…
…000010010000101011
32212201102112011001001
4130002231002100223
5443131143144433
621455444335431
72114104615123
oct340255022053
985642464031
1030110131243
1111851425295
125a039a4577
132abb14510a
141658d15c83
15bb363057d
hex702b4242b

30110131243 has 4 divisors (see below), whose sum is σ = 31419267408. Its totient is φ = 28800995080.

The previous prime is 30110131201. The next prime is 30110131283. The reversal of 30110131243 is 34213101103.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30110131243 - 229 = 29573260331 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30110131243.

It is not an unprimeable number, because it can be changed into a prime (30110131283) 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, 654568048 + ... + 654568093.

It is an arithmetic number, because the mean of its divisors is an integer number (7854816852).

Almost surely, 230110131243 is an apocalyptic number.

30110131243 is a deficient number, since it is larger than the sum of its proper divisors (1309136165).

30110131243 is a wasteful number, since it uses less digits than its factorization.

30110131243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309136164.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 30110131243 its reverse (34213101103), we get a palindrome (64323232346).

The spelling of 30110131243 in words is "thirty billion, one hundred ten million, one hundred thirty-one thousand, two hundred forty-three".

Divisors: 1 23 1309136141 30110131243