11681423 has 8 divisors (see below), whose sum is σ = 12873168. Its totient is φ = 10531584.

The previous prime is 11681413. The next prime is 11681429. The reversal of 11681423 is 32418611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11681423 - 2⁸ = 11681167 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11681392 and 11681401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11681429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9890 + ... + 11007.

It is an arithmetic number, because the mean of its divisors is an integer number (1609146).

Almost surely, 2^11681423 is an apocalyptic number.

11681423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11681423 is a deficient number, since it is larger than the sum of its proper divisors (1191745).

11681423 is a wasteful number, since it uses less digits than its factorization.

11681423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20953.

The product of its digits is 1152, while the sum is 26.

The square root of 11681423 is about 3417.8096787270. The cubic root of 11681423 is about 226.8986525794.

The spelling of 11681423 in words is "eleven million, six hundred eighty-one thousand, four hundred twenty-three".