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BaseRepresentation
bin10100011111101010…
…01110111001011011
31001101211010220011112
422033311032321123
5140013233444011
65015453050535
7536444135651
oct121765167133
931354126145
1011003031131
114736a19164
122170a86a4b
131064749211
1476545cdd1
15445e8c58b
hex28fd4ee5b

11003031131 has 2 divisors, whose sum is σ = 11003031132. Its totient is φ = 11003031130.

The previous prime is 11003031121. The next prime is 11003031191. The reversal of 11003031131 is 13113030011.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (13113030011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11003031131 - 214 = 11003014747 is a prime.

It is a super-2 number, since 2×110030311312 (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11003031121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5501515565 + 5501515566.

It is an arithmetic number, because the mean of its divisors is an integer number (5501515566).

Almost surely, 211003031131 is an apocalyptic number.

11003031131 is a deficient number, since it is larger than the sum of its proper divisors (1).

11003031131 is an equidigital number, since it uses as much as digits as its factorization.

11003031131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27, while the sum is 14.

Adding to 11003031131 its reverse (13113030011), we get a palindrome (24116061142).

The spelling of 11003031131 in words is "eleven billion, three million, thirty-one thousand, one hundred thirty-one".