285612319 has 2 divisors, whose sum is σ = 285612320. Its totient is φ = 285612318.

The previous prime is 285612277. The next prime is 285612347. The reversal of 285612319 is 913216582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 285612319 - 2²⁵ = 252057887 is a prime.

It is a super-2 number, since 2×285612319² = 163148793529115522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285612419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142806159 + 142806160.

It is an arithmetic number, because the mean of its divisors is an integer number (142806160).

Almost surely, 2^285612319 is an apocalyptic number.

285612319 is a deficient number, since it is larger than the sum of its proper divisors (1).

285612319 is an equidigital number, since it uses as much as digits as its factorization.

285612319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 37.

The square root of 285612319 is about 16900.0686093282. The cubic root of 285612319 is about 658.5553948457. Note that the first 3 decimals are identical.

The spelling of 285612319 in words is "two hundred eighty-five million, six hundred twelve thousand, three hundred nineteen".