1203281 has 4 divisors (see below), whose sum is σ = 1206372. Its totient is φ = 1200192.

The previous prime is 1203263. The next prime is 1203283. The reversal of 1203281 is 1823021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 625681 + 577600 = 791^2 + 760^2 .

It is a cyclic number.

It is not a de Polignac number, because 1203281 - 2⁶ = 1203217 is a prime.

It is a super-2 number, since 2×1203281² = 2895770329922, 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 (1203283) 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, 860 + ... + 1773.

It is an arithmetic number, because the mean of its divisors is an integer number (301593).

2^1203281 is an apocalyptic number.

It is an amenable number.

1203281 is a deficient number, since it is larger than the sum of its proper divisors (3091).

1203281 is an equidigital number, since it uses as much as digits as its factorization.

1203281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3090.

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

The square root of 1203281 is about 1096.9416575188. The cubic root of 1203281 is about 106.3626183058.

The spelling of 1203281 in words is "one million, two hundred three thousand, two hundred eighty-one".