285131483 has 32 divisors (see below), whose sum is σ = 372556800. Its totient is φ = 212040576.

The previous prime is 285131479. The next prime is 285131489. The reversal of 285131483 is 384131582.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 285131483 - 2² = 285131479 is a prime.

It is not an unprimeable number, because it can be changed into a prime (285131489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122333 + ... + 124641.

It is an arithmetic number, because the mean of its divisors is an integer number (11642400).

Almost surely, 2^285131483 is an apocalyptic number.

285131483 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

285131483 is a deficient number, since it is larger than the sum of its proper divisors (87425317).

285131483 is a wasteful number, since it uses less digits than its factorization.

285131483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2411.

The product of its digits is 23040, while the sum is 35.

The square root of 285131483 is about 16885.8367574722. The cubic root of 285131483 is about 658.1856220366.

Subtracting 285131483 from its reverse (384131582), we obtain a palindrome (99000099).

The spelling of 285131483 in words is "two hundred eighty-five million, one hundred thirty-one thousand, four hundred eighty-three".