11230312011 has 4 divisors (see below), whose sum is σ = 14973749352. Its totient is φ = 7486874672.

The previous prime is 11230311991. The next prime is 11230312019. The reversal of 11230312011 is 11021303211.

It is a happy number.

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 11230312011 - 2¹⁸ = 11230049867 is a prime.

It is a super-2 number, since 2×11230312011² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11230312019) 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, 1871718666 + ... + 1871718671.

It is an arithmetic number, because the mean of its divisors is an integer number (3743437338).

Almost surely, 2^11230312011 is an apocalyptic number.

11230312011 is a deficient number, since it is larger than the sum of its proper divisors (3743437341).

11230312011 is an equidigital number, since it uses as much as digits as its factorization.

11230312011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3743437340.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 11230312011 its reverse (11021303211), we get a palindrome (22251615222).

The spelling of 11230312011 in words is "eleven billion, two hundred thirty million, three hundred twelve thousand, eleven".