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4281 = 31427

4281 has 4 divisors (see below), whose sum is σ = 5712. Its totient is φ = 2852.

The previous prime is 4273. The next prime is 4283. The reversal of 4281 is 1824.

Adding to 4281 its reverse (1824), we get a triangular number (6105 = T110).

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.

It is a cyclic number.

It is not a de Polignac number, because 4281 - 23 = 4273 is a prime.

It is a super-2 number, since 2×42812 = 36653922, which contains 22 as substring.

It is a D-number.

It is a Curzon number.

It is a plaindrome in base 12 and base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 4281.

It is not an unprimeable number, because it can be changed into a prime (4283) 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, 711 + ... + 716.

It is an arithmetic number, because the mean of its divisors is an integer number (1428).

24281 is an apocalyptic number.

It is an amenable number.

4281 is a deficient number, since it is larger than the sum of its proper divisors (1431).

4281 is a wasteful number, since it uses less digits than its factorization.

4281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430.

The product of its digits is 64, while the sum is 15.

The square root of 4281 is about 65.4293512118. The cubic root of 4281 is about 16.2373471526.

The spelling of 4281 in words is "four thousand, two hundred eighty-one".

Divisors: 1 3 1427 4281