11111321323 has 16 divisors (see below), whose sum is σ = 11404800000. Its totient is φ = 10822249152.

The previous prime is 11111321269. The next prime is 11111321341. The reversal of 11111321323 is 32312311111.

It is a cyclic number.

It is not a de Polignac number, because 11111321323 - 2⁹ = 11111320811 is a prime.

It is a super-2 number, since 2×11111321323² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11111321323.

It is not an unprimeable number, because it can be changed into a prime (11111321393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3506886 + ... + 3510052.

It is an arithmetic number, because the mean of its divisors is an integer number (712800000).

Almost surely, 2^11111321323 is an apocalyptic number.

11111321323 is a deficient number, since it is larger than the sum of its proper divisors (293478677).

11111321323 is an equidigital number, since it uses as much as digits as its factorization.

11111321323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3834.

The product of its digits is 108, while the sum is 19.

Adding to 11111321323 its reverse (32312311111), we get a palindrome (43423632434).

The spelling of 11111321323 in words is "eleven billion, one hundred eleven million, three hundred twenty-one thousand, three hundred twenty-three".