13130311328 has 12 divisors (see below), whose sum is σ = 25850300490. Its totient is φ = 6565155648.

The previous prime is 13130311321. The next prime is 13130311351. The reversal of 13130311328 is 82311303131.

It can be written as a sum of positive squares in only one way, i.e., 12735573904 + 394737424 = 112852^2 + 19868^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13130311297 and 13130311306.

It is not an unprimeable number, because it can be changed into a prime (13130311321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205161083 + ... + 205161146.

Almost surely, 2^13130311328 is an apocalyptic number.

It is an amenable number.

13130311328 is a deficient number, since it is larger than the sum of its proper divisors (12719989162).

13130311328 is an equidigital number, since it uses as much as digits as its factorization.

13130311328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410322239 (or 410322231 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

Adding to 13130311328 its reverse (82311303131), we get a palindrome (95441614459).

The spelling of 13130311328 in words is "thirteen billion, one hundred thirty million, three hundred eleven thousand, three hundred twenty-eight".