281320355 has 8 divisors (see below), whose sum is σ = 338258592. Its totient is φ = 224606848.

The previous prime is 281320339. The next prime is 281320357. The reversal of 281320355 is 553023182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 281320355 - 2⁴ = 281320339 is a prime.

It is a super-2 number, since 2×281320355² = 158282284274652050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (281320357) 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 in 7 ways as a sum of consecutive naturals, for example, 53414 + ... + 58443.

It is an arithmetic number, because the mean of its divisors is an integer number (42282324).

Almost surely, 2^281320355 is an apocalyptic number.

281320355 is a deficient number, since it is larger than the sum of its proper divisors (56938237).

281320355 is a wasteful number, since it uses less digits than its factorization.

281320355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112365.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 281320355 is about 16772.6072809209. The cubic root of 281320355 is about 655.2399757784.

The spelling of 281320355 in words is "two hundred eighty-one million, three hundred twenty thousand, three hundred fifty-five".