1031113112321 has 4 divisors (see below), whose sum is σ = 1033409578500. Its totient is φ = 1028816646144.

The previous prime is 1031113112317. The next prime is 1031113112339. The reversal of 1031113112321 is 1232113111301.

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

It can be written as a sum of positive squares in 2 ways, for example, as 837371406400 + 193741705921 = 915080^2 + 440161^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031113112321 - 2² = 1031113112317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1031113112293 and 1031113112302.

It is not an unprimeable number, because it can be changed into a prime (1031113112621) 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, 1148232416 + ... + 1148233313.

It is an arithmetic number, because the mean of its divisors is an integer number (258352394625).

Almost surely, 2^{1031113112321} is an apocalyptic number.

It is an amenable number.

1031113112321 is a deficient number, since it is larger than the sum of its proper divisors (2296466179).

1031113112321 is an equidigital number, since it uses as much as digits as its factorization.

1031113112321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2296466178.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 1031113112321 its reverse (1232113111301), we get a palindrome (2263226223622).

The spelling of 1031113112321 in words is "one trillion, thirty-one billion, one hundred thirteen million, one hundred twelve thousand, three hundred twenty-one".