1111431304321 has 8 divisors (see below), whose sum is σ = 1197884345000. Its totient is φ = 1025115167232.

The previous prime is 1111431304141. The next prime is 1111431304327. The reversal of 1111431304321 is 1234031341111.

It can be written as a sum of positive squares in 4 ways, for example, as 238206468096 + 873224836225 = 488064^2 + 934465^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1111431304321 - 2¹⁷ = 1111431173249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111431304327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34209030 + ... + 34241503.

It is an arithmetic number, because the mean of its divisors is an integer number (149735543125).

Almost surely, 2^{1111431304321} is an apocalyptic number.

It is an amenable number.

1111431304321 is a deficient number, since it is larger than the sum of its proper divisors (86453040679).

1111431304321 is a wasteful number, since it uses less digits than its factorization.

1111431304321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68451795.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 1111431304321 its reverse (1234031341111), we get a palindrome (2345462645432).

The spelling of 1111431304321 in words is "one trillion, one hundred eleven billion, four hundred thirty-one million, three hundred four thousand, three hundred twenty-one".