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13810331 is a prime number
BaseRepresentation
bin110100101011…
…101010011011
3221222122012202
4310223222123
512013412311
61212000415
7225246233
oct64535233
927878182
1013810331
1178829a7
12476010b
132b26cc2
141b96cc3
15132be3b
hexd2ba9b

13810331 has 2 divisors, whose sum is σ = 13810332. Its totient is φ = 13810330.

The previous prime is 13810319. The next prime is 13810333. The reversal of 13810331 is 13301831.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (13301831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13810331 - 214 = 13793947 is a prime.

It is a super-2 number, since 2×138103312 = 381450484659122, which contains 22 as substring.

Together with 13810333, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13810333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6905165 + 6905166.

It is an arithmetic number, because the mean of its divisors is an integer number (6905166).

Almost surely, 213810331 is an apocalyptic number.

13810331 is a deficient number, since it is larger than the sum of its proper divisors (1).

13810331 is an equidigital number, since it uses as much as digits as its factorization.

13810331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 13810331 is about 3716.2253699150. The cubic root of 13810331 is about 239.9208709044.

It can be divided in two parts, 13810 and 331, that added together give a palindrome (14141).

The spelling of 13810331 in words is "thirteen million, eight hundred ten thousand, three hundred thirty-one".