281879117 has 16 divisors (see below), whose sum is σ = 324327360. Its totient is φ = 242808192.

The previous prime is 281879093. The next prime is 281879149. The reversal of 281879117 is 711978182.

It is a cyclic number.

It is not a de Polignac number, because 281879117 - 2²⁶ = 214770253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281879177) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8033 + ... + 25065.

It is an arithmetic number, because the mean of its divisors is an integer number (20270460).

Almost surely, 2^281879117 is an apocalyptic number.

It is an amenable number.

281879117 is a deficient number, since it is larger than the sum of its proper divisors (42448243).

281879117 is a wasteful number, since it uses less digits than its factorization.

281879117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17132.

The product of its digits is 56448, while the sum is 44.

The square root of 281879117 is about 16789.2559990013. The cubic root of 281879117 is about 655.6735041510.

The spelling of 281879117 in words is "two hundred eighty-one million, eight hundred seventy-nine thousand, one hundred seventeen".