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268318403 is a prime number
BaseRepresentation
bin11111111111000…
…11011011000011
3200200212222122122
433333203123003
51022142142103
642342554455
76435445253
oct1777433303
9620788578
10268318403
11128505651
1275a38a2b
13437875b2
14278c7963
1518851b38
hexffe36c3

268318403 has 2 divisors, whose sum is σ = 268318404. Its totient is φ = 268318402.

The previous prime is 268318363. The next prime is 268318447. The reversal of 268318403 is 304813862.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 268318403 - 212 = 268314307 is a prime.

It is not a weakly prime, because it can be changed into another prime (268318003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134159201 + 134159202.

It is an arithmetic number, because the mean of its divisors is an integer number (134159202).

Almost surely, 2268318403 is an apocalyptic number.

268318403 is a deficient number, since it is larger than the sum of its proper divisors (1).

268318403 is an equidigital number, since it uses as much as digits as its factorization.

268318403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 268318403 is about 16380.4274364255. The cubic root of 268318403 is about 644.9858002202.

The spelling of 268318403 in words is "two hundred sixty-eight million, three hundred eighteen thousand, four hundred three".