11980711 has 4 divisors (see below), whose sum is σ = 12304552. Its totient is φ = 11656872.

The previous prime is 11980693. The next prime is 11980763. The reversal of 11980711 is 11708911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11708911 = 131 ⋅89381.

It is a cyclic number.

It is not a de Polignac number, because 11980711 - 2⁵ = 11980679 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11980711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11980781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161865 + ... + 161938.

It is an arithmetic number, because the mean of its divisors is an integer number (3076138).

Almost surely, 2^11980711 is an apocalyptic number.

11980711 is a deficient number, since it is larger than the sum of its proper divisors (323841).

11980711 is an equidigital number, since it uses as much as digits as its factorization.

11980711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323840.

The product of its (nonzero) digits is 504, while the sum is 28.

The square root of 11980711 is about 3461.3163680889. The cubic root of 11980711 is about 228.8201138751.

The spelling of 11980711 in words is "eleven million, nine hundred eighty thousand, seven hundred eleven".