11840023 has 4 divisors (see below), whose sum is σ = 12750808. Its totient is φ = 10929240.

The previous prime is 11840011. The next prime is 11840029. The reversal of 11840023 is 32004811.

11840023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32004811 = 229 ⋅139759.

It is a cyclic number.

It is not a de Polignac number, because 11840023 - 2⁵ = 11839991 is a prime.

It is a super-2 number, since 2×11840023² = 280372289281058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11840029) 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, 455373 + ... + 455398.

It is an arithmetic number, because the mean of its divisors is an integer number (3187702).

Almost surely, 2^11840023 is an apocalyptic number.

11840023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11840023 is a deficient number, since it is larger than the sum of its proper divisors (910785).

11840023 is an equidigital number, since it uses as much as digits as its factorization.

11840023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910784.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 11840023 is about 3440.9334489350. The cubic root of 11840023 is about 227.9209161959.

Adding to 11840023 its reverse (32004811), we get a palindrome (43844834).

The spelling of 11840023 in words is "eleven million, eight hundred forty thousand, twenty-three".