3111204491 has 2 divisors, whose sum is σ = 3111204492. Its totient is φ = 3111204490.

The previous prime is 3111204431. The next prime is 3111204511. The reversal of 3111204491 is 1944021113.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1944021113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3111204491 - 2¹⁸ = 3110942347 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3111204491.

It is not a weakly prime, because it can be changed into another prime (3111204401) 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, 1555602245 + 1555602246.

It is an arithmetic number, because the mean of its divisors is an integer number (1555602246).

Almost surely, 2^3111204491 is an apocalyptic number.

3111204491 is a deficient number, since it is larger than the sum of its proper divisors (1).

3111204491 is an equidigital number, since it uses as much as digits as its factorization.

3111204491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 3111204491 is about 55778.1721733511. The cubic root of 3111204491 is about 1459.8543188288.

The spelling of 3111204491 in words is "three billion, one hundred eleven million, two hundred four thousand, four hundred ninety-one".