1310331225 has 24 divisors (see below), whose sum is σ = 2475903040. Its totient is φ = 599008320.

The previous prime is 1310331223. The next prime is 1310331251. The reversal of 1310331225 is 5221330131.

It is not a de Polignac number, because 1310331225 - 2¹ = 1310331223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1310331223) 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 in 23 ways as a sum of consecutive naturals, for example, 1247410 + ... + 1248459.

Almost surely, 2^1310331225 is an apocalyptic number.

1310331225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1310331225 is a deficient number, since it is larger than the sum of its proper divisors (1165571815).

1310331225 is a wasteful number, since it uses less digits than its factorization.

1310331225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2495889 (or 2495884 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 1310331225 is about 36198.4975516940. The cubic root of 1310331225 is about 1094.2763927158.

Adding to 1310331225 its reverse (5221330131), we get a palindrome (6531661356).

The spelling of 1310331225 in words is "one billion, three hundred ten million, three hundred thirty-one thousand, two hundred twenty-five".