3121351028 has 24 divisors (see below), whose sum is σ = 5906742912. Its totient is φ = 1437617024.

The previous prime is 3121351007. The next prime is 3121351031. The reversal of 3121351028 is 8201531213.

It is a junction number, because it is equal to n+sod(n) for n = 3121350988 and 3121351006.

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, 485126 + ... + 491517.

It is an arithmetic number, because the mean of its divisors is an integer number (246114288).

Almost surely, 2^3121351028 is an apocalyptic number.

It is an amenable number.

3121351028 is a deficient number, since it is larger than the sum of its proper divisors (2785391884).

3121351028 is a wasteful number, since it uses less digits than its factorization.

3121351028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976711 (or 976709 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 3121351028 is about 55869.0525067322. The cubic root of 3121351028 is about 1461.4395990033.

The spelling of 3121351028 in words is "three billion, one hundred twenty-one million, three hundred fifty-one thousand, twenty-eight".