285495031 has 2 divisors, whose sum is σ = 285495032. Its totient is φ = 285495030.

The previous prime is 285495011. The next prime is 285495037. The reversal of 285495031 is 130594582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 285495031 - 2¹¹ = 285492983 is a prime.

It is a super-2 number, since 2×285495031² = 163014825451381922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285495037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142747515 + 142747516.

It is an arithmetic number, because the mean of its divisors is an integer number (142747516).

Almost surely, 2^285495031 is an apocalyptic number.

285495031 is a deficient number, since it is larger than the sum of its proper divisors (1).

285495031 is an equidigital number, since it uses as much as digits as its factorization.

285495031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 285495031 is about 16896.5982079234. The cubic root of 285495031 is about 658.4652362455.

The spelling of 285495031 in words is "two hundred eighty-five million, four hundred ninety-five thousand, thirty-one".