3603281 has 4 divisors (see below), whose sum is σ = 3930864. Its totient is φ = 3275700.

The previous prime is 3603277. The next prime is 3603287. The reversal of 3603281 is 1823063.

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 3603281 - 2² = 3603277 is a prime.

It is a super-2 number, since 2×3603281² = 25967267929922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3603287) 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, 163775 + ... + 163796.

It is an arithmetic number, because the mean of its divisors is an integer number (982716).

Almost surely, 2^3603281 is an apocalyptic number.

It is an amenable number.

3603281 is a deficient number, since it is larger than the sum of its proper divisors (327583).

3603281 is a wasteful number, since it uses less digits than its factorization.

3603281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327582.

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

The square root of 3603281 is about 1898.2310186065. The cubic root of 3603281 is about 153.3084327345.

The spelling of 3603281 in words is "three million, six hundred three thousand, two hundred eighty-one".