285213407 has 2 divisors, whose sum is σ = 285213408. Its totient is φ = 285213406.

The previous prime is 285213391. The next prime is 285213413. The reversal of 285213407 is 704312582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 285213407 - 2⁴ = 285213391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285213457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142606703 + 142606704.

It is an arithmetic number, because the mean of its divisors is an integer number (142606704).

Almost surely, 2^285213407 is an apocalyptic number.

285213407 is a deficient number, since it is larger than the sum of its proper divisors (1).

285213407 is an equidigital number, since it uses as much as digits as its factorization.

285213407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 285213407 is about 16888.2624032196. The cubic root of 285213407 is about 658.2486526485.

Adding to 285213407 its reverse (704312582), we get a palindrome (989525989).

The spelling of 285213407 in words is "two hundred eighty-five million, two hundred thirteen thousand, four hundred seven".