281351 has 4 divisors (see below), whose sum is σ = 321552. Its totient is φ = 241152.

The previous prime is 281339. The next prime is 281353. The reversal of 281351 is 153182.

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 281351 - 2¹⁰ = 280327 is a prime.

It is a plaindrome in base 12.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 281351.

It is not an unprimeable number, because it can be changed into a prime (281353) 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, 20090 + ... + 20103.

It is an arithmetic number, because the mean of its divisors is an integer number (80388).

2²⁸¹³⁵¹ is an apocalyptic number.

281351 is a deficient number, since it is larger than the sum of its proper divisors (40201).

281351 is an equidigital number, since it uses as much as digits as its factorization.

281351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40200.

The product of its digits is 240, while the sum is 20.

The square root of 281351 is about 530.4253010557. The cubic root of 281351 is about 65.5263767279.

The spelling of 281351 in words is "two hundred eighty-one thousand, three hundred fifty-one".