11965423 has 2 divisors, whose sum is σ = 11965424. Its totient is φ = 11965422.

The previous prime is 11965403. The next prime is 11965453. The reversal of 11965423 is 32456911.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11965423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11965403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5982711 + 5982712.

It is an arithmetic number, because the mean of its divisors is an integer number (5982712).

Almost surely, 2^11965423 is an apocalyptic number.

11965423 is a deficient number, since it is larger than the sum of its proper divisors (1).

11965423 is an equidigital number, since it uses as much as digits as its factorization.

11965423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 31.

The square root of 11965423 is about 3459.1072547696. The cubic root of 11965423 is about 228.7227437241.

The spelling of 11965423 in words is "eleven million, nine hundred sixty-five thousand, four hundred twenty-three".