3121143105 has 32 divisors (see below), whose sum is σ = 5068419840. Its totient is φ = 1639802880.

The previous prime is 3121143049. The next prime is 3121143119. The reversal of 3121143105 is 5013411213.

It is not a de Polignac number, because 3121143105 - 2⁹ = 3121142593 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1443225 + ... + 1445385.

It is an arithmetic number, because the mean of its divisors is an integer number (158388120).

Almost surely, 2^3121143105 is an apocalyptic number.

It is an amenable number.

3121143105 is a deficient number, since it is larger than the sum of its proper divisors (1947276735).

3121143105 is a wasteful number, since it uses less digits than its factorization.

3121143105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3561.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 3121143105 is about 55867.1916691720. The cubic root of 3121143105 is about 1461.4071479214.

Adding to 3121143105 its reverse (5013411213), we get a palindrome (8134554318).

The spelling of 3121143105 in words is "three billion, one hundred twenty-one million, one hundred forty-three thousand, one hundred five".