3121330016406 has 16 divisors (see below), whose sum is σ = 7134468609024. Its totient is φ = 891808576104.

The previous prime is 3121330016377. The next prime is 3121330016429. The reversal of 3121330016406 is 6046100331213.

3121330016406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37158690630 + ... + 37158690713.

It is an arithmetic number, because the mean of its divisors is an integer number (445904288064).

Almost surely, 2^{3121330016406} is an apocalyptic number.

3121330016406 is an abundant number, since it is smaller than the sum of its proper divisors (4013138592618).

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

3121330016406 is a wasteful number, since it uses less digits than its factorization.

3121330016406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74317381355.

The product of its (nonzero) digits is 7776, while the sum is 30.

Adding to 3121330016406 its reverse (6046100331213), we get a palindrome (9167430347619).

The spelling of 3121330016406 in words is "three trillion, one hundred twenty-one billion, three hundred thirty million, sixteen thousand, four hundred six".