1311032115225 has 144 divisors (see below), whose sum is σ = 2835123441280. Its totient is φ = 565731993600.

The previous prime is 1311032115137. The next prime is 1311032115241. The reversal of 1311032115225 is 5225112301131.

1311032115225 is a `hidden beast` number, since 1 + 3 + 110 + 3 + 21 + 1 + 522 + 5 = 666.

It is not a de Polignac number, because 1311032115225 - 2⁹ = 1311032114713 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 8210145 + ... + 8368305.

Almost surely, 2^{1311032115225} is an apocalyptic number.

1311032115225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1311032115225 is an abundant number, since it is smaller than the sum of its proper divisors (1524091326055).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311032115225 is a wasteful number, since it uses less digits than its factorization.

1311032115225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158480 (or 158472 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

Adding to 1311032115225 its reverse (5225112301131), we get a palindrome (6536144416356).

The spelling of 1311032115225 in words is "one trillion, three hundred eleven billion, thirty-two million, one hundred fifteen thousand, two hundred twenty-five".