1321031230103 has 16 divisors (see below), whose sum is σ = 1454344657920. Its totient is φ = 1192296698976.

The previous prime is 1321031230091. The next prime is 1321031230163. The reversal of 1321031230103 is 3010321301231.

It is a cyclic number.

It is not a de Polignac number, because 1321031230103 - 2⁶ = 1321031230039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321031230163) 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, 438275 + ... + 1683492.

It is an arithmetic number, because the mean of its divisors is an integer number (90896541120).

Almost surely, 2^{1321031230103} is an apocalyptic number.

1321031230103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1321031230103 is a deficient number, since it is larger than the sum of its proper divisors (133313427817).

1321031230103 is a wasteful number, since it uses less digits than its factorization.

1321031230103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2122846.

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

Adding to 1321031230103 its reverse (3010321301231), we get a palindrome (4331352531334).

The spelling of 1321031230103 in words is "one trillion, three hundred twenty-one billion, thirty-one million, two hundred thirty thousand, one hundred three".