1020103231321 has 4 divisors (see below), whose sum is σ = 1035328652752. Its totient is φ = 1004877809892.

The previous prime is 1020103231271. The next prime is 1020103231339. The reversal of 1020103231321 is 1231323010201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1020103231321 - 2¹³ = 1020103223129 is a prime.

It is a super-2 number, since 2×1020103231321² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020103241321) 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, 7612710615 + ... + 7612710748.

It is an arithmetic number, because the mean of its divisors is an integer number (258832163188).

Almost surely, 2^{1020103231321} is an apocalyptic number.

It is an amenable number.

1020103231321 is a deficient number, since it is larger than the sum of its proper divisors (15225421431).

1020103231321 is an equidigital number, since it uses as much as digits as its factorization.

1020103231321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15225421430.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1020103231321 its reverse (1231323010201), we get a palindrome (2251426241522).

The spelling of 1020103231321 in words is "one trillion, twenty billion, one hundred three million, two hundred thirty-one thousand, three hundred twenty-one".