11913197 has 2 divisors, whose sum is σ = 11913198. Its totient is φ = 11913196.

The previous prime is 11913191. The next prime is 11913217. The reversal of 11913197 is 79131911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8934121 + 2979076 = 2989^2 + 1726^2 .

It is a cyclic number.

It is not a de Polignac number, because 11913197 - 2⁸ = 11912941 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11913191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5956598 + 5956599.

It is an arithmetic number, because the mean of its divisors is an integer number (5956599).

Almost surely, 2^11913197 is an apocalyptic number.

It is an amenable number.

11913197 is a deficient number, since it is larger than the sum of its proper divisors (1).

11913197 is an equidigital number, since it uses as much as digits as its factorization.

11913197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1701, while the sum is 32.

The square root of 11913197 is about 3451.5499416929. The cubic root of 11913197 is about 228.3894863700.

It can be divided in two parts, 11913 and 197, that multiplied together give a triangular number (2346861 = T₂₁₆₆).

The spelling of 11913197 in words is "eleven million, nine hundred thirteen thousand, one hundred ninety-seven".