11857423 has 2 divisors, whose sum is σ = 11857424. Its totient is φ = 11857422.

The previous prime is 11857409. The next prime is 11857451. The reversal of 11857423 is 32475811.

It is a weak prime.

It is an emirp because it is prime and its reverse (32475811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11857423 - 2¹³ = 11849231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11857453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5928711 + 5928712.

It is an arithmetic number, because the mean of its divisors is an integer number (5928712).

Almost surely, 2^11857423 is an apocalyptic number.

11857423 is a deficient number, since it is larger than the sum of its proper divisors (1).

11857423 is an equidigital number, since it uses as much as digits as its factorization.

11857423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 31.

The square root of 11857423 is about 3443.4609043809. The cubic root of 11857423 is about 228.0325117791.

The spelling of 11857423 in words is "eleven million, eight hundred fifty-seven thousand, four hundred twenty-three".