11140312321 has 4 divisors (see below), whose sum is σ = 11140596144. Its totient is φ = 11140028500.

The previous prime is 11140312291. The next prime is 11140312343. The reversal of 11140312321 is 12321304111.

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.

It is a cyclic number.

It is not a de Polignac number, because 11140312321 - 2⁵ = 11140312289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11140312021) 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, 71335 + ... + 165436.

It is an arithmetic number, because the mean of its divisors is an integer number (2785149036).

Almost surely, 2^11140312321 is an apocalyptic number.

It is an amenable number.

11140312321 is a deficient number, since it is larger than the sum of its proper divisors (283823).

11140312321 is an equidigital number, since it uses as much as digits as its factorization.

11140312321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283822.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 11140312321 its reverse (12321304111), we get a palindrome (23461616432).

The spelling of 11140312321 in words is "eleven billion, one hundred forty million, three hundred twelve thousand, three hundred twenty-one".