3121673 has 4 divisors (see below), whose sum is σ = 3134868. Its totient is φ = 3108480.

The previous prime is 3121667. The next prime is 3121691. The reversal of 3121673 is 3761213.

It is a happy number.

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 1236544 + 1885129 = 1112^2 + 1373^2 .

It is a cyclic number.

It is not a de Polignac number, because 3121673 - 2⁶ = 3121609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3121603) 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, 6236 + ... + 6717.

It is an arithmetic number, because the mean of its divisors is an integer number (783717).

Almost surely, 2^3121673 is an apocalyptic number.

It is an amenable number.

3121673 is a deficient number, since it is larger than the sum of its proper divisors (13195).

3121673 is a wasteful number, since it uses less digits than its factorization.

3121673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13194.

The product of its digits is 756, while the sum is 23.

The square root of 3121673 is about 1766.8256846673. The cubic root of 3121673 is about 146.1489847165.

Adding to 3121673 its reverse (3761213), we get a palindrome (6882886).

The spelling of 3121673 in words is "three million, one hundred twenty-one thousand, six hundred seventy-three".