363281 has 4 divisors (see below), whose sum is σ = 366912. Its totient is φ = 359652.

The previous prime is 363277. The next prime is 363313. The reversal of 363281 is 182363.

363281 is nontrivially palindromic in base 14.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 182363 = 43 ⋅4241.

It is a cyclic number.

It is not a de Polignac number, because 363281 - 2² = 363277 is a prime.

It is a super-2 number, since 2×363281² = 263946169922, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 5.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 363281.

It is not an unprimeable number, because it can be changed into a prime (363211) 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, 1661 + ... + 1866.

It is an arithmetic number, because the mean of its divisors is an integer number (91728).

2³⁶³²⁸¹ is an apocalyptic number.

It is an amenable number.

363281 is a deficient number, since it is larger than the sum of its proper divisors (3631).

363281 is a wasteful number, since it uses less digits than its factorization.

363281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3630.

The product of its digits is 864, while the sum is 23.

The square root of 363281 is about 602.7279651717. The cubic root of 363281 is about 71.3533270495.

The spelling of 363281 in words is "three hundred sixty-three thousand, two hundred eighty-one".