3113778901 has 2 divisors, whose sum is σ = 3113778902. Its totient is φ = 3113778900.

The previous prime is 3113778887. The next prime is 3113778949. The reversal of 3113778901 is 1098773113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2942954001 + 170824900 = 54249^2 + 13070^2 .

It is an emirp because it is prime and its reverse (1098773113) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3113778901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3113776901) 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 as a sum of consecutive naturals, namely, 1556889450 + 1556889451.

It is an arithmetic number, because the mean of its divisors is an integer number (1556889451).

Almost surely, 2^3113778901 is an apocalyptic number.

It is an amenable number.

3113778901 is a deficient number, since it is larger than the sum of its proper divisors (1).

3113778901 is an equidigital number, since it uses as much as digits as its factorization.

3113778901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 40.

The square root of 3113778901 is about 55801.2446187359. The cubic root of 3113778901 is about 1460.2568668274.

The spelling of 3113778901 in words is "three billion, one hundred thirteen million, seven hundred seventy-eight thousand, nine hundred one".