281147034289 has 81 divisors (see below), whose sum is σ = 339666845049. Its totient is φ = 232496565840.

The previous prime is 281147034283. The next prime is 281147034307. The reversal of 281147034289 is 982430741182.

The square root of 281147034289 is 530233.

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

It is not a de Polignac number, because 281147034289 - 2³ = 281147034281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (281147034281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 4765203942 + ... + 4765204000.

Almost surely, 2^281147034289 is an apocalyptic number.

281147034289 is the 530233-rd square number.

281147034289 is the 265117-th centered octagonal number.

It is an amenable number.

281147034289 is a deficient number, since it is larger than the sum of its proper divisors (58519810760).

281147034289 is an equidigital number, since it uses as much as digits as its factorization.

281147034289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 49.

Multiplying 281147034289 by its sum of digits (49), we get a square (13776204680161 = 3711631²).

The spelling of 281147034289 in words is "two hundred eighty-one billion, one hundred forty-seven million, thirty-four thousand, two hundred eighty-nine".