1311233434 has 64 divisors (see below), whose sum is σ = 2498400000. Its totient is φ = 513874368.

The previous prime is 1311233393. The next prime is 1311233437. The reversal of 1311233434 is 4343321131.

It is a junction number, because it is equal to n+sod(n) for n = 1311233399 and 1311233408.

It is not an unprimeable number, because it can be changed into a prime (1311233437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 376252 + ... + 379720.

It is an arithmetic number, because the mean of its divisors is an integer number (39037500).

Almost surely, 2^1311233434 is an apocalyptic number.

1311233434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1311233434 is a deficient number, since it is larger than the sum of its proper divisors (1187166566).

1311233434 is a wasteful number, since it uses less digits than its factorization.

1311233434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3540 (or 3526 counting only the distinct ones).

The product of its digits is 2592, while the sum is 25.

The square root of 1311233434 is about 36210.9573748058. The cubic root of 1311233434 is about 1094.5274843199.

Adding to 1311233434 its reverse (4343321131), we get a palindrome (5654554565).

The spelling of 1311233434 in words is "one billion, three hundred eleven million, two hundred thirty-three thousand, four hundred thirty-four".