13123130032321 has 4 divisors (see below), whose sum is σ = 13123295918512. Its totient is φ = 13122964146132.

The previous prime is 13123130032277. The next prime is 13123130032451. The reversal of 13123130032321 is 12323003132131.

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 13123130032321 - 2¹⁹ = 13123129508033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13123130032921) 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, 82824375 + ... + 82982668.

It is an arithmetic number, because the mean of its divisors is an integer number (3280823979628).

Almost surely, 2^{13123130032321} is an apocalyptic number.

It is an amenable number.

13123130032321 is a deficient number, since it is larger than the sum of its proper divisors (165886191).

13123130032321 is an equidigital number, since it uses as much as digits as its factorization.

13123130032321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165886190.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 13123130032321 its reverse (12323003132131), we get a palindrome (25446133164452).

The spelling of 13123130032321 in words is "thirteen trillion, one hundred twenty-three billion, one hundred thirty million, thirty-two thousand, three hundred twenty-one".