3136111661 has 2 divisors, whose sum is σ = 3136111662. Its totient is φ = 3136111660.

The previous prime is 3136111639. The next prime is 3136111681. The reversal of 3136111661 is 1661116313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3128164900 + 7946761 = 55930^2 + 2819^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3136111661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3136111631) 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, 1568055830 + 1568055831.

It is an arithmetic number, because the mean of its divisors is an integer number (1568055831).

Almost surely, 2^3136111661 is an apocalyptic number.

It is an amenable number.

3136111661 is a deficient number, since it is larger than the sum of its proper divisors (1).

3136111661 is an equidigital number, since it uses as much as digits as its factorization.

3136111661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 29.

The square root of 3136111661 is about 56000.9969643398. The cubic root of 3136111661 is about 1463.7396563257.

Adding to 3136111661 its reverse (1661116313), we get a palindrome (4797227974).

The spelling of 3136111661 in words is "three billion, one hundred thirty-six million, one hundred eleven thousand, six hundred sixty-one".