285131051 has 2 divisors, whose sum is σ = 285131052. Its totient is φ = 285131050.

The previous prime is 285131047. The next prime is 285131071. The reversal of 285131051 is 150131582.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 285131051 - 2² = 285131047 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 285131051.

It is not a weakly prime, because it can be changed into another prime (285131071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142565525 + 142565526.

It is an arithmetic number, because the mean of its divisors is an integer number (142565526).

Almost surely, 2^285131051 is an apocalyptic number.

285131051 is a deficient number, since it is larger than the sum of its proper divisors (1).

285131051 is an equidigital number, since it uses as much as digits as its factorization.

285131051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 285131051 is about 16885.8239656820. The cubic root of 285131051 is about 658.1852896328.

The spelling of 285131051 in words is "two hundred eighty-five million, one hundred thirty-one thousand, fifty-one".