11123643 has 8 divisors (see below), whose sum is σ = 15232528. Its totient is φ = 7215264.

The previous prime is 11123639. The next prime is 11123647. The reversal of 11123643 is 34632111.

It is an interprime number because it is at equal distance from previous prime (11123639) and next prime (11123647).

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

It is not a de Polignac number, because 11123643 - 2² = 11123639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11123647) 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, 49996 + ... + 50217.

It is an arithmetic number, because the mean of its divisors is an integer number (1904066).

Almost surely, 2^11123643 is an apocalyptic number.

11123643 is a deficient number, since it is larger than the sum of its proper divisors (4108885).

11123643 is a wasteful number, since it uses less digits than its factorization.

11123643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100253.

The product of its digits is 432, while the sum is 21.

The square root of 11123643 is about 3335.2125869276. The cubic root of 11123643 is about 223.2281777673.

Adding to 11123643 its reverse (34632111), we get a palindrome (45755754).

The spelling of 11123643 in words is "eleven million, one hundred twenty-three thousand, six hundred forty-three".