281380003 has 8 divisors (see below), whose sum is σ = 288229568. Its totient is φ = 274544424.

The previous prime is 281379991. The next prime is 281380013. The reversal of 281380003 is 300083182.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-281380003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 281380003.

It is not an unprimeable number, because it can be changed into a prime (281380013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45376 + ... + 51202.

It is an arithmetic number, because the mean of its divisors is an integer number (36028696).

Almost surely, 2^281380003 is an apocalyptic number.

281380003 is a deficient number, since it is larger than the sum of its proper divisors (6849565).

281380003 is a wasteful number, since it uses less digits than its factorization.

281380003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6993.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 281380003 is about 16774.3853240588. The cubic root of 281380003 is about 655.2862824076.

The spelling of 281380003 in words is "two hundred eighty-one million, three hundred eighty thousand, three".