1311311234 has 4 divisors (see below), whose sum is σ = 1966966854. Its totient is φ = 655655616.

The previous prime is 1311311189. The next prime is 1311311263. The reversal of 1311311234 is 4321131131.

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

It can be written as a sum of positive squares in only one way, i.e., 752130625 + 559180609 = 27425^2 + 23647^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327827807 + ... + 327827810.

Almost surely, 2^1311311234 is an apocalyptic number.

1311311234 is a deficient number, since it is larger than the sum of its proper divisors (655655620).

1311311234 is an equidigital number, since it uses as much as digits as its factorization.

1311311234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655655619.

The product of its digits is 216, while the sum is 20.

The square root of 1311311234 is about 36212.0316193389. The cubic root of 1311311234 is about 1094.5491312548.

Adding to 1311311234 its reverse (4321131131), we get a palindrome (5632442365).

The spelling of 1311311234 in words is "one billion, three hundred eleven million, three hundred eleven thousand, two hundred thirty-four".