281034947 has 4 divisors (see below), whose sum is σ = 295826280. Its totient is φ = 266243616.

The previous prime is 281034883. The next prime is 281034959. The reversal of 281034947 is 749430182.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 281034947 - 2⁶ = 281034883 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 281034947.

It is not an unprimeable number, because it can be changed into a prime (281034967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7395638 + ... + 7395675.

It is an arithmetic number, because the mean of its divisors is an integer number (73956570).

Almost surely, 2^281034947 is an apocalyptic number.

281034947 is a deficient number, since it is larger than the sum of its proper divisors (14791333).

281034947 is a wasteful number, since it uses less digits than its factorization.

281034947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14791332.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 281034947 is about 16764.0969634514. The cubic root of 281034947 is about 655.0183138830.

The spelling of 281034947 in words is "two hundred eighty-one million, thirty-four thousand, nine hundred forty-seven".