285731384147497 has 2 divisors, whose sum is σ = 285731384147498. Its totient is φ = 285731384147496.

The previous prime is 285731384147459. The next prime is 285731384147537. The reversal of 285731384147497 is 794741483137582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227039681722896 + 58691702424601 = 15067836^2 + 7661051^2 .

It is a cyclic number.

It is not a de Polignac number, because 285731384147497 - 2⁴³ = 276935291125289 is a prime.

It is a super-3 number, since 3×285731384147497³ (a number of 44 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (285731384147197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142865692073748 + 142865692073749.

It is an arithmetic number, because the mean of its divisors is an integer number (142865692073749).

Almost surely, 2^{285731384147497} is an apocalyptic number.

It is an amenable number.

285731384147497 is a deficient number, since it is larger than the sum of its proper divisors (1).

285731384147497 is an equidigital number, since it uses as much as digits as its factorization.

285731384147497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1137991680, while the sum is 73.

The spelling of 285731384147497 in words is "two hundred eighty-five trillion, seven hundred thirty-one billion, three hundred eighty-four million, one hundred forty-seven thousand, four hundred ninety-seven".