3581023 has 4 divisors (see below), whose sum is σ = 3584880. Its totient is φ = 3577168.

The previous prime is 3581021. The next prime is 3581029. The reversal of 3581023 is 3201853.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 3581023 - 2¹ = 3581021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3580985 and 3581003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3581021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 411 + ... + 2707.

It is an arithmetic number, because the mean of its divisors is an integer number (896220).

Almost surely, 2^3581023 is an apocalyptic number.

3581023 is a deficient number, since it is larger than the sum of its proper divisors (3857).

3581023 is a wasteful number, since it uses less digits than its factorization.

3581023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3856.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 3581023 is about 1892.3591096829. The cubic root of 3581023 is about 152.9921108894.

Adding to 3581023 its reverse (3201853), we get a palindrome (6782876).

The spelling of 3581023 in words is "three million, five hundred eighty-one thousand, twenty-three".