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12880331 is a prime number
BaseRepresentation
bin110001001000…
…100111001011
3220020101111022
4301020213023
511244132311
61140023055
7214323662
oct61104713
926211438
1012880331
1172a8202
124391a8b
13288c8c9
1419d3dd9
1511e65db
hexc489cb

12880331 has 2 divisors, whose sum is σ = 12880332. Its totient is φ = 12880330.

The previous prime is 12880319. The next prime is 12880337. The reversal of 12880331 is 13308821.

12880331 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12880331 - 26 = 12880267 is a prime.

It is a super-2 number, since 2×128803312 = 331805853339122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12880331.

It is not a weakly prime, because it can be changed into another prime (12880337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6440165 + 6440166.

It is an arithmetic number, because the mean of its divisors is an integer number (6440166).

Almost surely, 212880331 is an apocalyptic number.

12880331 is a deficient number, since it is larger than the sum of its proper divisors (1).

12880331 is an equidigital number, since it uses as much as digits as its factorization.

12880331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 12880331 is about 3588.9178034611. The cubic root of 12880331 is about 234.4097515522.

The spelling of 12880331 in words is "twelve million, eight hundred eighty thousand, three hundred thirty-one".