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13102031 is a prime number
BaseRepresentation
bin110001111110…
…101111001111
3220122122121102
4301332233033
511323231111
61144453315
7216236225
oct61765717
926578542
1013102031
117439828
12447a23b
1329397a7
141a50b15
15123c13b
hexc7ebcf

13102031 has 2 divisors, whose sum is σ = 13102032. Its totient is φ = 13102030.

The previous prime is 13102021. The next prime is 13102069. The reversal of 13102031 is 13020131.

It is a weak prime.

It is an emirp because it is prime and its reverse (13020131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13102031 is a prime.

It is a super-2 number, since 2×131020312 = 343326432649922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13102021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6551015 + 6551016.

It is an arithmetic number, because the mean of its divisors is an integer number (6551016).

Almost surely, 213102031 is an apocalyptic number.

13102031 is a deficient number, since it is larger than the sum of its proper divisors (1).

13102031 is an equidigital number, since it uses as much as digits as its factorization.

13102031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 13102031 is about 3619.6727752657. The cubic root of 13102031 is about 235.7470177642.

Adding to 13102031 its reverse (13020131), we get a palindrome (26122162).

The spelling of 13102031 in words is "thirteen million, one hundred two thousand, thirty-one".