1311534523235 has 4 divisors (see below), whose sum is σ = 1573841427888. Its totient is φ = 1049227618584.

The previous prime is 1311534523231. The next prime is 1311534523283. The reversal of 1311534523235 is 5323254351131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1311534523235 - 2² = 1311534523231 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311534523231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131153452319 + ... + 131153452328.

It is an arithmetic number, because the mean of its divisors is an integer number (393460356972).

Almost surely, 2^{1311534523235} is an apocalyptic number.

1311534523235 is a deficient number, since it is larger than the sum of its proper divisors (262306904653).

1311534523235 is an equidigital number, since it uses as much as digits as its factorization.

1311534523235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262306904652.

The product of its digits is 162000, while the sum is 38.

Adding to 1311534523235 its reverse (5323254351131), we get a palindrome (6634788874366).

The spelling of 1311534523235 in words is "one trillion, three hundred eleven billion, five hundred thirty-four million, five hundred twenty-three thousand, two hundred thirty-five".