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13251031 is a prime number
BaseRepresentation
bin110010100011…
…000111010111
3220221012222221
4302203013113
511343013111
61152003211
7220426513
oct62430727
926835887
1013251031
117530772
124530507
13298c561
141a8d143
15126b371
hexca31d7

13251031 has 2 divisors, whose sum is σ = 13251032. Its totient is φ = 13251030.

The previous prime is 13251023. The next prime is 13251047. The reversal of 13251031 is 13015231.

It is an a-pointer prime, because the next prime (13251047) can be obtained adding 13251031 to its sum of digits (16).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13251031 - 23 = 13251023 is a prime.

It is a super-2 number, since 2×132510312 = 351179645125922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13250996 and 13251014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13251001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6625515 + 6625516.

It is an arithmetic number, because the mean of its divisors is an integer number (6625516).

Almost surely, 213251031 is an apocalyptic number.

13251031 is a deficient number, since it is larger than the sum of its proper divisors (1).

13251031 is an equidigital number, since it uses as much as digits as its factorization.

13251031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 13251031 is about 3640.1965606269. The cubic root of 13251031 is about 236.6373119271.

Adding to 13251031 its reverse (13015231), we get a palindrome (26266262).

The spelling of 13251031 in words is "thirteen million, two hundred fifty-one thousand, thirty-one".