1311432025 has 6 divisors (see below), whose sum is σ = 1626175742. Its totient is φ = 1049145600.

The previous prime is 1311432007. The next prime is 1311432047. The reversal of 1311432025 is 5202341131.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 19820304 + 1291611721 = 4452^2 + 35939^2 .

It is not a de Polignac number, because 1311432025 - 2²⁹ = 774561113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1311431987 and 1311432005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26228616 + ... + 26228665.

Almost surely, 2^1311432025 is an apocalyptic number.

It is an amenable number.

1311432025 is a deficient number, since it is larger than the sum of its proper divisors (314743717).

1311432025 is an equidigital number, since it uses as much as digits as its factorization.

1311432025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52457291 (or 52457286 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1311432025 is about 36213.6994105822. The cubic root of 1311432025 is about 1094.5827382331.

Adding to 1311432025 its reverse (5202341131), we get a palindrome (6513773156).

The spelling of 1311432025 in words is "one billion, three hundred eleven million, four hundred thirty-two thousand, twenty-five".