1311103225 has 6 divisors (see below), whose sum is σ = 1625768030. Its totient is φ = 1048882560.

The previous prime is 1311103217. The next prime is 1311103259. The reversal of 1311103225 is 5223011131.

It can be written as a sum of positive squares in 3 ways, for example, as 39538944 + 1271564281 = 6288^2 + 35659^2 .

It is not a de Polignac number, because 1311103225 - 2³ = 1311103217 is a prime.

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, 26222040 + ... + 26222089.

Almost surely, 2^1311103225 is an apocalyptic number.

It is an amenable number.

1311103225 is a deficient number, since it is larger than the sum of its proper divisors (314664805).

1311103225 is an equidigital number, since it uses as much as digits as its factorization.

1311103225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52444139 (or 52444134 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1311103225 is about 36209.1594075311. The cubic root of 1311103225 is about 1094.4912532815.

Adding to 1311103225 its reverse (5223011131), we get a palindrome (6534114356).

The spelling of 1311103225 in words is "one billion, three hundred eleven million, one hundred three thousand, two hundred twenty-five".