1321532103423 has 12 divisors (see below), whose sum is σ = 2049723262680. Its totient is φ = 755161201872.

The previous prime is 1321532103403. The next prime is 1321532103431. The reversal of 1321532103423 is 3243012351231.

It is not a de Polignac number, because 1321532103423 - 2⁹ = 1321532102911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321532103403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4495007008 + ... + 4495007301.

It is an arithmetic number, because the mean of its divisors is an integer number (170810271890).

Almost surely, 2^{1321532103423} is an apocalyptic number.

1321532103423 is a deficient number, since it is larger than the sum of its proper divisors (728191159257).

1321532103423 is an equidigital number, since it uses as much as digits as its factorization.

1321532103423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8990014326 (or 8990014319 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 1321532103423 its reverse (3243012351231), we get a palindrome (4564544454654).

The spelling of 1321532103423 in words is "one trillion, three hundred twenty-one billion, five hundred thirty-two million, one hundred three thousand, four hundred twenty-three".