1031323311121 has 4 divisors (see below), whose sum is σ = 1031325764644. Its totient is φ = 1031320857600.

The previous prime is 1031323311079. The next prime is 1031323311163. The reversal of 1031323311121 is 1211133231301.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1031323311079) and next prime (1031323311163).

It can be written as a sum of positive squares in 2 ways, for example, as 517664421121 + 513658890000 = 719489^2 + 716700^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031323311121 - 2⁹ = 1031323310609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1031323311092 and 1031323311101.

It is not an unprimeable number, because it can be changed into a prime (1031323311721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 418920 + ... + 1496041.

It is an arithmetic number, because the mean of its divisors is an integer number (257831441161).

Almost surely, 2^{1031323311121} is an apocalyptic number.

It is an amenable number.

1031323311121 is a deficient number, since it is larger than the sum of its proper divisors (2453523).

1031323311121 is an equidigital number, since it uses as much as digits as its factorization.

1031323311121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2453522.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1031323311121 its reverse (1211133231301), we get a palindrome (2242456542422).

The spelling of 1031323311121 in words is "one trillion, thirty-one billion, three hundred twenty-three million, three hundred eleven thousand, one hundred twenty-one".