281097 has 16 divisors (see below), whose sum is σ = 432000. Its totient is φ = 180432.

The previous prime is 281081. The next prime is 281117. The reversal of 281097 is 790182.

It is not a de Polignac number, because 281097 - 2⁴ = 281081 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 281097.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 281097.

It is not an unprimeable number, because it can be changed into a prime (281297) 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, 604 + ... + 962.

It is an arithmetic number, because the mean of its divisors is an integer number (27000).

2²⁸¹⁰⁹⁷ is an apocalyptic number.

281097 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

281097 is a deficient number, since it is larger than the sum of its proper divisors (150903).

281097 is a wasteful number, since it uses less digits than its factorization.

281097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397 (or 391 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 281097 is about 530.1858164832. The cubic root of 281097 is about 65.5066520059.

The spelling of 281097 in words is "two hundred eighty-one thousand, ninety-seven".