281204302369 has 9 divisors (see below), whose sum is σ = 284677682803. Its totient is φ = 277772815192.

The previous prime is 281204302339. The next prime is 281204302387. The reversal of 281204302369 is 963203402182.

The square root of 281204302369 is 530287.

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., 791690769 + 280412611600 = 28137^2 + 529540^2 .

It is not a de Polignac number, because 281204302369 - 2⁷ = 281204302241 is a prime.

It is a super-2 number, since 2×281204302369² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (281204302339) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 44010627 + ... + 44017015.

Almost surely, 2^281204302369 is an apocalyptic number.

281204302369 is the 530287-th square number.

281204302369 is the 265144-th centered octagonal number.

It is an amenable number.

281204302369 is a deficient number, since it is larger than the sum of its proper divisors (3473380434).

281204302369 is an frugal number, since it uses more digits than its factorization.

281204302369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12944 (or 6472 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The spelling of 281204302369 in words is "two hundred eighty-one billion, two hundred four million, three hundred two thousand, three hundred sixty-nine".