11423563 has 4 divisors (see below), whose sum is σ = 11430448. Its totient is φ = 11416680.

The previous prime is 11423557. The next prime is 11423569. The reversal of 11423563 is 36532411.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (11423557) and next prime (11423569).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11423563 is a prime.

It is a super-2 number, since 2×11423563² = 260995583229938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11423569) 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, 745 + ... + 4837.

It is an arithmetic number, because the mean of its divisors is an integer number (2857612).

Almost surely, 2^11423563 is an apocalyptic number.

11423563 is a deficient number, since it is larger than the sum of its proper divisors (6885).

11423563 is an equidigital number, since it uses as much as digits as its factorization.

11423563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6884.

The product of its digits is 2160, while the sum is 25.

The square root of 11423563 is about 3379.8761811640. The cubic root of 11423563 is about 225.2166670106.

Adding to 11423563 its reverse (36532411), we get a palindrome (47955974).

The spelling of 11423563 in words is "eleven million, four hundred twenty-three thousand, five hundred sixty-three".