11156430223 has 4 divisors (see below), whose sum is σ = 11255159808. Its totient is φ = 11057700640.

The previous prime is 11156430193. The next prime is 11156430269. The reversal of 11156430223 is 32203465111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11156430223 - 2¹⁷ = 11156299151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11156430191 and 11156430200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11156430823) 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, 49364623 + ... + 49364848.

It is an arithmetic number, because the mean of its divisors is an integer number (2813789952).

Almost surely, 2^11156430223 is an apocalyptic number.

11156430223 is a deficient number, since it is larger than the sum of its proper divisors (98729585).

11156430223 is an equidigital number, since it uses as much as digits as its factorization.

11156430223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98729584.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 11156430223 its reverse (32203465111), we get a palindrome (43359895334).

The spelling of 11156430223 in words is "eleven billion, one hundred fifty-six million, four hundred thirty thousand, two hundred twenty-three".