3121990002 has 24 divisors (see below), whose sum is σ = 6799367484. Its totient is φ = 1035270144.

The previous prime is 3121989989. The next prime is 3121990021. The reversal of 3121990002 is 2000991213.

3121990002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2790058041 + 331931961 = 52821^2 + 18219^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 445863 + ... + 452810.

Almost surely, 2^3121990002 is an apocalyptic number.

3121990002 is an abundant number, since it is smaller than the sum of its proper divisors (3677377482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3121990002 is a wasteful number, since it uses less digits than its factorization.

3121990002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898874 (or 898871 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 3121990002 is about 55874.7707109389. The cubic root of 3121990002 is about 1461.5393163142.

The spelling of 3121990002 in words is "three billion, one hundred twenty-one million, nine hundred ninety thousand, two".