9161123311 has 2 divisors, whose sum is σ = 9161123312. Its totient is φ = 9161123310.

The previous prime is 9161123273. The next prime is 9161123333. The reversal of 9161123311 is 1133211619.

9161123311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9161123311 - 2⁹ = 9161122799 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9161123311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9161123351) 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, 4580561655 + 4580561656.

It is an arithmetic number, because the mean of its divisors is an integer number (4580561656).

Almost surely, 2^9161123311 is an apocalyptic number.

9161123311 is a deficient number, since it is larger than the sum of its proper divisors (1).

9161123311 is an equidigital number, since it uses as much as digits as its factorization.

9161123311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 28.

The square root of 9161123311 is about 95713.7571668775. The cubic root of 9161123311 is about 2092.4234390772.

The spelling of 9161123311 in words is "nine billion, one hundred sixty-one million, one hundred twenty-three thousand, three hundred eleven".