285187423 has 2 divisors, whose sum is σ = 285187424. Its totient is φ = 285187422.

The previous prime is 285187411. The next prime is 285187439. The reversal of 285187423 is 324781582.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 285187423 - 2⁹ = 285186911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285187723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142593711 + 142593712.

It is an arithmetic number, because the mean of its divisors is an integer number (142593712).

Almost surely, 2^285187423 is an apocalyptic number.

285187423 is a deficient number, since it is larger than the sum of its proper divisors (1).

285187423 is an equidigital number, since it uses as much as digits as its factorization.

285187423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 107520, while the sum is 40.

The square root of 285187423 is about 16887.4930940030. The cubic root of 285187423 is about 658.2286624096.

The spelling of 285187423 in words is "two hundred eighty-five million, one hundred eighty-seven thousand, four hundred twenty-three".