3126116261 has 2 divisors, whose sum is σ = 3126116262. Its totient is φ = 3126116260.

The previous prime is 3126116249. The next prime is 3126116267. The reversal of 3126116261 is 1626116213.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2950553761 + 175562500 = 54319^2 + 13250^2 .

It is an emirp because it is prime and its reverse (1626116213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3126116261 - 2¹⁴ = 3126099877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3126116267) 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, 1563058130 + 1563058131.

It is an arithmetic number, because the mean of its divisors is an integer number (1563058131).

Almost surely, 2^3126116261 is an apocalyptic number.

It is an amenable number.

3126116261 is a deficient number, since it is larger than the sum of its proper divisors (1).

3126116261 is an equidigital number, since it uses as much as digits as its factorization.

3126116261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 29.

The square root of 3126116261 is about 55911.6826879678. The cubic root of 3126116261 is about 1462.1829266215.

The spelling of 3126116261 in words is "three billion, one hundred twenty-six million, one hundred sixteen thousand, two hundred sixty-one".