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13531142243 is a prime number
BaseRepresentation
bin11001001101000010…
…01101100001100011
31021221000020020122102
430212201031201203
5210202433022433
610114403201015
7656212545203
oct144641154143
937830206572
1013531142243
115813a82493
12275767616b
13137843b958
1492510a403
15542dbc4e8
hex32684d863

13531142243 has 2 divisors, whose sum is σ = 13531142244. Its totient is φ = 13531142242.

The previous prime is 13531142227. The next prime is 13531142269. The reversal of 13531142243 is 34224113531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13531142243 - 24 = 13531142227 is a prime.

It is not a weakly prime, because it can be changed into another prime (13531142143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6765571121 + 6765571122.

It is an arithmetic number, because the mean of its divisors is an integer number (6765571122).

Almost surely, 213531142243 is an apocalyptic number.

13531142243 is a deficient number, since it is larger than the sum of its proper divisors (1).

13531142243 is an equidigital number, since it uses as much as digits as its factorization.

13531142243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 29.

Adding to 13531142243 its reverse (34224113531), we get a palindrome (47755255774).

The spelling of 13531142243 in words is "thirteen billion, five hundred thirty-one million, one hundred forty-two thousand, two hundred forty-three".