3121374851611 has 4 divisors (see below), whose sum is σ = 3121399709224. Its totient is φ = 3121349994000.

The previous prime is 3121374851531. The next prime is 3121374851629. The reversal of 3121374851611 is 1161584731213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3121374851611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3121374851671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12239490 + ... + 12491911.

It is an arithmetic number, because the mean of its divisors is an integer number (780349927306).

Almost surely, 2^{3121374851611} is an apocalyptic number.

3121374851611 is a deficient number, since it is larger than the sum of its proper divisors (24857613).

3121374851611 is a wasteful number, since it uses less digits than its factorization.

3121374851611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24857612.

The product of its digits is 120960, while the sum is 43.

The spelling of 3121374851611 in words is "three trillion, one hundred twenty-one billion, three hundred seventy-four million, eight hundred fifty-one thousand, six hundred eleven".