13311431225 has 6 divisors (see below), whose sum is σ = 16506174750. Its totient is φ = 10649144960.

The previous prime is 13311431209. The next prime is 13311431233. The reversal of 13311431225 is 52213411331.

It can be written as a sum of positive squares in 3 ways, for example, as 119530489 + 13191900736 = 10933^2 + 114856^2 .

It is not a de Polignac number, because 13311431225 - 2⁴ = 13311431209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13311431194 and 13311431203.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 266228600 + ... + 266228649.

It is an arithmetic number, because the mean of its divisors is an integer number (2751029125).

Almost surely, 2^13311431225 is an apocalyptic number.

It is an amenable number.

13311431225 is a deficient number, since it is larger than the sum of its proper divisors (3194743525).

13311431225 is an equidigital number, since it uses as much as digits as its factorization.

13311431225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532457259 (or 532457254 counting only the distinct ones).

The product of its digits is 2160, while the sum is 26.

Adding to 13311431225 its reverse (52213411331), we get a palindrome (65524842556).

The spelling of 13311431225 in words is "thirteen billion, three hundred eleven million, four hundred thirty-one thousand, two hundred twenty-five".