268217351 has 2 divisors, whose sum is σ = 268217352. Its totient is φ = 268217350.

The previous prime is 268217333. The next prime is 268217371. The reversal of 268217351 is 153712862.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268217351 is a prime.

It is a Chen prime.

It is equal to p_14619590 and since 268217351 and 14619590 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268217371) 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, 134108675 + 134108676.

It is an arithmetic number, because the mean of its divisors is an integer number (134108676).

Almost surely, 2^268217351 is an apocalyptic number.

268217351 is a deficient number, since it is larger than the sum of its proper divisors (1).

268217351 is an equidigital number, since it uses as much as digits as its factorization.

268217351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 35.

The square root of 268217351 is about 16377.3426110587. The cubic root of 268217351 is about 644.9048202002.

The spelling of 268217351 in words is "two hundred sixty-eight million, two hundred seventeen thousand, three hundred fifty-one".