13031231611 has 2 divisors, whose sum is σ = 13031231612. Its totient is φ = 13031231610.

The previous prime is 13031231599. The next prime is 13031231627. The reversal of 13031231611 is 11613213031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13031231611 - 2⁷ = 13031231483 is a prime.

It is not a weakly prime, because it can be changed into another prime (13031231651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6515615805 + 6515615806.

It is an arithmetic number, because the mean of its divisors is an integer number (6515615806).

Almost surely, 2^13031231611 is an apocalyptic number.

13031231611 is a deficient number, since it is larger than the sum of its proper divisors (1).

13031231611 is an equidigital number, since it uses as much as digits as its factorization.

13031231611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 13031231611 its reverse (11613213031), we get a palindrome (24644444642).

The spelling of 13031231611 in words is "thirteen billion, thirty-one million, two hundred thirty-one thousand, six hundred eleven".