11213873 has 4 divisors (see below), whose sum is σ = 12233328. Its totient is φ = 10194420.

The previous prime is 11213843. The next prime is 11213957. The reversal of 11213873 is 37831211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37831211 = 11 ⋅3439201.

It is a cyclic number.

It is not a de Polignac number, because 11213873 - 2⁶ = 11213809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11213833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509711 + ... + 509732.

It is an arithmetic number, because the mean of its divisors is an integer number (3058332).

Almost surely, 2^11213873 is an apocalyptic number.

It is an amenable number.

11213873 is a deficient number, since it is larger than the sum of its proper divisors (1019455).

11213873 is a wasteful number, since it uses less digits than its factorization.

11213873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019454.

The product of its digits is 1008, while the sum is 26.

The square root of 11213873 is about 3348.7121405101. The cubic root of 11213873 is about 223.8301287036.

It can be divided in two parts, 112138 and 73, that added together give a palindrome (112211).

The spelling of 11213873 in words is "eleven million, two hundred thirteen thousand, eight hundred seventy-three".