1031103020321 has 8 divisors (see below), whose sum is σ = 1140682471488. Its totient is φ = 924164038000.

The previous prime is 1031103020309. The next prime is 1031103020377. The reversal of 1031103020321 is 1230203011301.

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

It is a cyclic number.

It is not a de Polignac number, because 1031103020321 - 2¹⁴ = 1031103003937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1031103020321.

It is not an unprimeable number, because it can be changed into a prime (1031103050321) 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, 660116390 + ... + 660117951.

It is an arithmetic number, because the mean of its divisors is an integer number (142585308936).

Almost surely, 2^{1031103020321} is an apocalyptic number.

1031103020321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1031103020321 is a deficient number, since it is larger than the sum of its proper divisors (109579451167).

1031103020321 is a wasteful number, since it uses less digits than its factorization.

1031103020321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320234423.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 1031103020321 its reverse (1230203011301), we get a palindrome (2261306031622).

The spelling of 1031103020321 in words is "one trillion, thirty-one billion, one hundred three million, twenty thousand, three hundred twenty-one".