1230281 has 8 divisors (see below), whose sum is σ = 1339464. Its totient is φ = 1123200.

The previous prime is 1230263. The next prime is 1230301. The reversal of 1230281 is 1820321.

It can be written as a sum of positive squares in 4 ways, for example, as 55225 + 1175056 = 235^2 + 1084^2 .

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

It is not a de Polignac number, because 1230281 - 2¹⁰ = 1229257 is a prime.

It is a super-2 number, since 2×1230281² = 3027182677922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230241) 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, 845 + ... + 1781.

It is an arithmetic number, because the mean of its divisors is an integer number (167433).

2^1230281 is an apocalyptic number.

It is an amenable number.

1230281 is a deficient number, since it is larger than the sum of its proper divisors (109183).

1230281 is a wasteful number, since it uses less digits than its factorization.

1230281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1230281 is about 1109.1803279900. The cubic root of 1230281 is about 107.1522855618.

The spelling of 1230281 in words is "one million, two hundred thirty thousand, two hundred eighty-one".