268431407 has 2 divisors, whose sum is σ = 268431408. Its totient is φ = 268431406.

The previous prime is 268431353. The next prime is 268431419. The reversal of 268431407 is 704134862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 268431407 - 2¹² = 268427311 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268431607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134215703 + 134215704.

It is an arithmetic number, because the mean of its divisors is an integer number (134215704).

Almost surely, 2^268431407 is an apocalyptic number.

268431407 is a deficient number, since it is larger than the sum of its proper divisors (1).

268431407 is an equidigital number, since it uses as much as digits as its factorization.

268431407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 268431407 is about 16383.8764338602. The cubic root of 268431407 is about 645.0763341342.

The spelling of 268431407 in words is "two hundred sixty-eight million, four hundred thirty-one thousand, four hundred seven".