285602131 has 2 divisors, whose sum is σ = 285602132. Its totient is φ = 285602130.

The previous prime is 285602117. The next prime is 285602147. The reversal of 285602131 is 131206582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 285602131 - 2⁵ = 285602099 is a prime.

It is a super-2 number, since 2×285602131² = 163137154463482322, which contains 22 as substring.

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 285602131.

It is not a weakly prime, because it can be changed into another prime (285602831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142801065 + 142801066.

It is an arithmetic number, because the mean of its divisors is an integer number (142801066).

Almost surely, 2^285602131 is an apocalyptic number.

285602131 is a deficient number, since it is larger than the sum of its proper divisors (1).

285602131 is an equidigital number, since it uses as much as digits as its factorization.

285602131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 285602131 is about 16899.7671877455. The cubic root of 285602131 is about 658.5475643686.

The spelling of 285602131 in words is "two hundred eighty-five million, six hundred two thousand, one hundred thirty-one".