3121607 has 8 divisors (see below), whose sum is σ = 3257472. Its totient is φ = 2988000.

The previous prime is 3121603. The next prime is 3121609. The reversal of 3121607 is 7061213.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3121607 - 2² = 3121603 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121603) 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 7 ways as a sum of consecutive naturals, for example, 2633 + ... + 3629.

It is an arithmetic number, because the mean of its divisors is an integer number (407184).

Almost surely, 2^3121607 is an apocalyptic number.

3121607 is a deficient number, since it is larger than the sum of its proper divisors (135865).

3121607 is a wasteful number, since it uses less digits than its factorization.

3121607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 3121607 is about 1766.8070070044. The cubic root of 3121607 is about 146.1479547238.

The spelling of 3121607 in words is "three million, one hundred twenty-one thousand, six hundred seven".