1323232121613 has 4 divisors (see below), whose sum is σ = 1764309495488. Its totient is φ = 882154747740.

The previous prime is 1323232121593. The next prime is 1323232121623. The reversal of 1323232121613 is 3161212323231.

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 not a de Polignac number, because 1323232121613 - 2¹⁶ = 1323232056077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323232121623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220538686933 + ... + 220538686938.

It is an arithmetic number, because the mean of its divisors is an integer number (441077373872).

Almost surely, 2^{1323232121613} is an apocalyptic number.

It is an amenable number.

1323232121613 is a deficient number, since it is larger than the sum of its proper divisors (441077373875).

1323232121613 is an equidigital number, since it uses as much as digits as its factorization.

1323232121613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441077373874.

The product of its digits is 7776, while the sum is 30.

Adding to 1323232121613 its reverse (3161212323231), we get a palindrome (4484444444844).

The spelling of 1323232121613 in words is "one trillion, three hundred twenty-three billion, two hundred thirty-two million, one hundred twenty-one thousand, six hundred thirteen".