1031123204321 has 16 divisors (see below), whose sum is σ = 1180098201600. Its totient is φ = 882566846160.

The previous prime is 1031123204291. The next prime is 1031123204351. The reversal of 1031123204321 is 1234023211301.

It is an interprime number because it is at equal distance from previous prime (1031123204291) and next prime (1031123204351).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1031123204321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1031123204351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18317000 + ... + 18373206.

It is an arithmetic number, because the mean of its divisors is an integer number (73756137600).

Almost surely, 2^{1031123204321} is an apocalyptic number.

It is an amenable number.

1031123204321 is a deficient number, since it is larger than the sum of its proper divisors (148974997279).

1031123204321 is an equidigital number, since it uses as much as digits as its factorization.

1031123204321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59884.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1031123204321 its reverse (1234023211301), we get a palindrome (2265146415622).

The spelling of 1031123204321 in words is "one trillion, thirty-one billion, one hundred twenty-three million, two hundred four thousand, three hundred twenty-one".