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BaseRepresentation
bin110010000101…
…110101011111
3220201010111011
4302011311133
511330143403
61145240051
7216420046
oct62056537
926633434
1013131103
117459657
124493027
132949aab
141a5b55d
151245a6d
hexc85d5f

13131103 has 2 divisors, whose sum is σ = 13131104. Its totient is φ = 13131102.

The previous prime is 13131067. The next prime is 13131127. The reversal of 13131103 is 30113131.

Adding to 13131103 its reverse (30113131), we get a palindrome (43244234).

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (30113131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13131103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13131133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6565551 + 6565552.

It is an arithmetic number, because the mean of its divisors is an integer number (6565552).

Almost surely, 213131103 is an apocalyptic number.

13131103 is a deficient number, since it is larger than the sum of its proper divisors (1).

13131103 is an equidigital number, since it uses as much as digits as its factorization.

13131103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27, while the sum is 13.

The square root of 13131103 is about 3623.6863826772. The cubic root of 13131103 is about 235.9212547299.

The spelling of 13131103 in words is "thirteen million, one hundred thirty-one thousand, one hundred three".