111323031321 has 4 divisors (see below), whose sum is σ = 148430708432. Its totient is φ = 74215354212.

The previous prime is 111323031307. The next prime is 111323031343. The reversal of 111323031321 is 123130323111.

It is a happy number.

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 not a de Polignac number, because 111323031321 - 2¹³ = 111323023129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111323031371) 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, 18553838551 + ... + 18553838556.

It is an arithmetic number, because the mean of its divisors is an integer number (37107677108).

Almost surely, 2^111323031321 is an apocalyptic number.

It is an amenable number.

111323031321 is a deficient number, since it is larger than the sum of its proper divisors (37107677111).

111323031321 is an equidigital number, since it uses as much as digits as its factorization.

111323031321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37107677110.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 111323031321 its reverse (123130323111), we get a palindrome (234453354432).

The spelling of 111323031321 in words is "one hundred eleven billion, three hundred twenty-three million, thirty-one thousand, three hundred twenty-one".