1031323320011 has 4 divisors (see below), whose sum is σ = 1031325452400. Its totient is φ = 1031321187624.

The previous prime is 1031323319993. The next prime is 1031323320017. The reversal of 1031323320011 is 1100233231301.

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

It is a cyclic number.

It is not a de Polignac number, because 1031323320011 - 2³⁸ = 756445413067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1031323320017) 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, 46010 + ... + 1436928.

It is an arithmetic number, because the mean of its divisors is an integer number (257831363100).

Almost surely, 2^{1031323320011} is an apocalyptic number.

1031323320011 is a deficient number, since it is larger than the sum of its proper divisors (2132389).

1031323320011 is an equidigital number, since it uses as much as digits as its factorization.

1031323320011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2132388.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 1031323320011 its reverse (1100233231301), we get a palindrome (2131556551312).

The spelling of 1031323320011 in words is "one trillion, thirty-one billion, three hundred twenty-three million, three hundred twenty thousand, eleven".