281230047 has 24 divisors (see below), whose sum is σ = 479232000. Its totient is φ = 155517840.

The previous prime is 281230043. The next prime is 281230057. The reversal of 281230047 is 740032182.

It is not a de Polignac number, because 281230047 - 2² = 281230043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 281230047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281230043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70047 + ... + 73952.

It is an arithmetic number, because the mean of its divisors is an integer number (19968000).

Almost surely, 2^281230047 is an apocalyptic number.

281230047 is a deficient number, since it is larger than the sum of its proper divisors (198001953).

281230047 is a wasteful number, since it uses less digits than its factorization.

281230047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144043 (or 144040 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 281230047 is about 16769.9149371725. The cubic root of 281230047 is about 655.1698543627.

The spelling of 281230047 in words is "two hundred eighty-one million, two hundred thirty thousand, forty-seven".