3121646245 has 8 divisors (see below), whose sum is σ = 3801885984. Its totient is φ = 2460043344.

The previous prime is 3121646219. The next prime is 3121646261. The reversal of 3121646245 is 5426461213.

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 3121646245 - 2⁷ = 3121646117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3121646245.

It is a congruent number.

It is an unprimeable number.

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, 4658839 + ... + 4659508.

It is an arithmetic number, because the mean of its divisors is an integer number (475235748).

Almost surely, 2^3121646245 is an apocalyptic number.

It is an amenable number.

3121646245 is a deficient number, since it is larger than the sum of its proper divisors (680239739).

3121646245 is an equidigital number, since it uses as much as digits as its factorization.

3121646245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9318419.

The product of its digits is 34560, while the sum is 34.

The square root of 3121646245 is about 55871.6944883543. The cubic root of 3121646245 is about 1461.4856718105.

The spelling of 3121646245 in words is "three billion, one hundred twenty-one million, six hundred forty-six thousand, two hundred forty-five".