1311252231115 has 8 divisors (see below), whose sum is σ = 1599297803568. Its totient is φ = 1031805034080.

The previous prime is 1311252231109. The next prime is 1311252231131. The reversal of 1311252231115 is 5111322521131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1311252231115 - 2⁷ = 1311252230987 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2149593517 + ... + 2149594126.

It is an arithmetic number, because the mean of its divisors is an integer number (199912225446).

Almost surely, 2^{1311252231115} is an apocalyptic number.

1311252231115 is a deficient number, since it is larger than the sum of its proper divisors (288045572453).

1311252231115 is an equidigital number, since it uses as much as digits as its factorization.

1311252231115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4299187709.

The product of its digits is 1800, while the sum is 28.

Adding to 1311252231115 its reverse (5111322521131), we get a palindrome (6422574752246).

The spelling of 1311252231115 in words is "one trillion, three hundred eleven billion, two hundred fifty-two million, two hundred thirty-one thousand, one hundred fifteen".