281135369284 has 135 divisors (see below), whose sum is σ = 631556238285. Its totient is φ = 109183314240.

The previous prime is 281135369279. The next prime is 281135369297. The reversal of 281135369284 is 482963531182.

The square root of 281135369284 is 530222.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1793522500 + 279341846784 = 42350^2 + 528528^2 .

It is an unprimeable number.

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 44 ways as a sum of consecutive naturals, for example, 898195912 + ... + 898196224.

Almost surely, 2^281135369284 is an apocalyptic number.

281135369284 is the 530222-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 281135369284

281135369284 is an abundant number, since it is smaller than the sum of its proper divisors (350420869001).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

281135369284 is an frugal number, since it uses more digits than its factorization.

281135369284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688 (or 333 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 52.

The spelling of 281135369284 in words is "two hundred eighty-one billion, one hundred thirty-five million, three hundred sixty-nine thousand, two hundred eighty-four".