3117492121 has 2 divisors, whose sum is σ = 3117492122. Its totient is φ = 3117492120.

The previous prime is 3117492109. The next prime is 3117492149. The reversal of 3117492121 is 1212947113.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3114867721 + 2624400 = 55811^2 + 1620^2 .

It is a cyclic number.

It is not a de Polignac number, because 3117492121 - 2²¹ = 3115394969 is a prime.

It is not a weakly prime, because it can be changed into another prime (3117490121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1558746060 + 1558746061.

It is an arithmetic number, because the mean of its divisors is an integer number (1558746061).

Almost surely, 2^3117492121 is an apocalyptic number.

It is an amenable number.

3117492121 is a deficient number, since it is larger than the sum of its proper divisors (1).

3117492121 is an equidigital number, since it uses as much as digits as its factorization.

3117492121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 31.

The square root of 3117492121 is about 55834.5065438927. The cubic root of 3117492121 is about 1460.8370943937.

The spelling of 3117492121 in words is "three billion, one hundred seventeen million, four hundred ninety-two thousand, one hundred twenty-one".