13123204431331 has 8 divisors (see below), whose sum is σ = 14071045705920. Its totient is φ = 12194906275968.

The previous prime is 13123204431313. The next prime is 13123204431371. The reversal of 13123204431331 is 13313440232131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13123204431331 - 2⁷ = 13123204431203 is a prime.

It is a super-2 number, since 2×13123204431331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13123204431293 and 13123204431302.

It is not an unprimeable number, because it can be changed into a prime (13123204431371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4885778416 + ... + 4885781101.

It is an arithmetic number, because the mean of its divisors is an integer number (1758880713240).

Almost surely, 2^{13123204431331} is an apocalyptic number.

13123204431331 is a deficient number, since it is larger than the sum of its proper divisors (947841274589).

13123204431331 is an equidigital number, since it uses as much as digits as its factorization.

13123204431331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9771559613.

The product of its (nonzero) digits is 15552, while the sum is 31.

Adding to 13123204431331 its reverse (13313440232131), we get a palindrome (26436644663462).

The spelling of 13123204431331 in words is "thirteen trillion, one hundred twenty-three billion, two hundred four million, four hundred thirty-one thousand, three hundred thirty-one".