281013 has 8 divisors (see below), whose sum is σ = 382848. Its totient is φ = 183264.

The previous prime is 280997. The next prime is 281023. The reversal of 281013 is 310182.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 281013 - 2⁴ = 280997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 280983 and 281001.

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 281013.

It is not an unprimeable number, because it can be changed into a prime (281023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 856 + ... + 1137.

It is an arithmetic number, because the mean of its divisors is an integer number (47856).

2²⁸¹⁰¹³ is an apocalyptic number.

It is an amenable number.

281013 is a deficient number, since it is larger than the sum of its proper divisors (101835).

281013 is a wasteful number, since it uses less digits than its factorization.

281013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2043.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 281013 is about 530.1065930546. The cubic root of 281013 is about 65.5001262550.

Adding to 281013 its reverse (310182), we get a palindrome (591195).

The spelling of 281013 in words is "two hundred eighty-one thousand, thirteen".