1355312311 has 4 divisors (see below), whose sum is σ = 1355424624. Its totient is φ = 1355200000.

The previous prime is 1355312297. The next prime is 1355312317. The reversal of 1355312311 is 1132135531.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1355312311 - 2⁵ = 1355312279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355312317) 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, 35530 + ... + 63031.

It is an arithmetic number, because the mean of its divisors is an integer number (338856156).

Almost surely, 2^1355312311 is an apocalyptic number.

1355312311 is a deficient number, since it is larger than the sum of its proper divisors (112313).

1355312311 is an equidigital number, since it uses as much as digits as its factorization.

1355312311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112312.

The product of its digits is 1350, while the sum is 25.

The square root of 1355312311 is about 36814.5665599909. The cubic root of 1355312311 is about 1106.6572352566.

Adding to 1355312311 its reverse (1132135531), we get a palindrome (2487447842).

The spelling of 1355312311 in words is "one billion, three hundred fifty-five million, three hundred twelve thousand, three hundred eleven".