268131697 has 2 divisors, whose sum is σ = 268131698. Its totient is φ = 268131696.

The previous prime is 268131683. The next prime is 268131727. The reversal of 268131697 is 796131862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227376241 + 40755456 = 15079^2 + 6384^2 .

It is a cyclic number.

It is not a de Polignac number, because 268131697 - 2¹⁹ = 267607409 is a prime.

It is not a weakly prime, because it can be changed into another prime (268131397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134065848 + 134065849.

It is an arithmetic number, because the mean of its divisors is an integer number (134065849).

Almost surely, 2^268131697 is an apocalyptic number.

It is an amenable number.

268131697 is a deficient number, since it is larger than the sum of its proper divisors (1).

268131697 is an equidigital number, since it uses as much as digits as its factorization.

268131697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 43.

The square root of 268131697 is about 16374.7273870437. The cubic root of 268131697 is about 644.8361637438.

The spelling of 268131697 in words is "two hundred sixty-eight million, one hundred thirty-one thousand, six hundred ninety-seven".