3113101921 has 2 divisors, whose sum is σ = 3113101922. Its totient is φ = 3113101920.

The previous prime is 3113101913. The next prime is 3113101939. The reversal of 3113101921 is 1291013113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3109623696 + 3478225 = 55764^2 + 1865^2 .

It is a cyclic number.

It is not a de Polignac number, because 3113101921 - 2³ = 3113101913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3113101892 and 3113101901.

It is not a weakly prime, because it can be changed into another prime (3113101961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1556550960 + 1556550961.

It is an arithmetic number, because the mean of its divisors is an integer number (1556550961).

Almost surely, 2^3113101921 is an apocalyptic number.

It is an amenable number.

3113101921 is a deficient number, since it is larger than the sum of its proper divisors (1).

3113101921 is an equidigital number, since it uses as much as digits as its factorization.

3113101921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 3113101921 is about 55795.1782952613. The cubic root of 3113101921 is about 1460.1510322583.

The spelling of 3113101921 in words is "three billion, one hundred thirteen million, one hundred one thousand, nine hundred twenty-one".