281483481 has 4 divisors (see below), whose sum is σ = 375311312. Its totient is φ = 187655652.

The previous prime is 281483473. The next prime is 281483497. The reversal of 281483481 is 184384182.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 281483481 - 2³ = 281483473 is a prime.

It is a super-2 number, since 2×281483481² = 158465900151754722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (281483431) 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 3 ways as a sum of consecutive naturals, for example, 46913911 + ... + 46913916.

It is an arithmetic number, because the mean of its divisors is an integer number (93827828).

Almost surely, 2^281483481 is an apocalyptic number.

It is an amenable number.

281483481 is a deficient number, since it is larger than the sum of its proper divisors (93827831).

281483481 is an equidigital number, since it uses as much as digits as its factorization.

281483481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93827830.

The product of its digits is 49152, while the sum is 39.

The square root of 281483481 is about 16777.4694456584. The cubic root of 281483481 is about 655.3666001307.

The spelling of 281483481 in words is "two hundred eighty-one million, four hundred eighty-three thousand, four hundred eighty-one".