3121223 has 16 divisors (see below), whose sum is σ = 3732480. Its totient is φ = 2554656.

The previous prime is 3121219. The next prime is 3121229. The reversal of 3121223 is 3221213.

It is a happy number.

3121223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 3121223 - 2² = 3121219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3121198 and 3121207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17348 + ... + 17526.

It is an arithmetic number, because the mean of its divisors is an integer number (233280).

Almost surely, 2^3121223 is an apocalyptic number.

3121223 is a deficient number, since it is larger than the sum of its proper divisors (611257).

3121223 is a wasteful number, since it uses less digits than its factorization.

3121223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286.

The product of its digits is 72, while the sum is 14.

The square root of 3121223 is about 1766.6983330495. The cubic root of 3121223 is about 146.1419617512.

Adding to 3121223 its reverse (3221213), we get a palindrome (6342436).

The spelling of 3121223 in words is "three million, one hundred twenty-one thousand, two hundred twenty-three".