11975311 has 2 divisors, whose sum is σ = 11975312. Its totient is φ = 11975310.

The previous prime is 11975291. The next prime is 11975351. The reversal of 11975311 is 11357911.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11975311 - 2⁹ = 11974799 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11975311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11975351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5987655 + 5987656.

It is an arithmetic number, because the mean of its divisors is an integer number (5987656).

Almost surely, 2^11975311 is an apocalyptic number.

11975311 is a deficient number, since it is larger than the sum of its proper divisors (1).

11975311 is an equidigital number, since it uses as much as digits as its factorization.

11975311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 945, while the sum is 28.

The square root of 11975311 is about 3460.5362301239. The cubic root of 11975311 is about 228.7857304315.

The spelling of 11975311 in words is "eleven million, nine hundred seventy-five thousand, three hundred eleven".