1311303434 has 16 divisors (see below), whose sum is σ = 2249909568. Its totient is φ = 561496992.

The previous prime is 1311303419. The next prime is 1311303481. The reversal of 1311303434 is 4343031131.

It is a Curzon 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, 23987 + ... + 56550.

It is an arithmetic number, because the mean of its divisors is an integer number (140619348).

Almost surely, 2^1311303434 is an apocalyptic number.

1311303434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1311303434 is a deficient number, since it is larger than the sum of its proper divisors (938606134).

1311303434 is a wasteful number, since it uses less digits than its factorization.

1311303434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81709.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 1311303434 is about 36211.9239201675. The cubic root of 1311303434 is about 1094.5469610351.

Adding to 1311303434 its reverse (4343031131), we get a palindrome (5654334565).

The spelling of 1311303434 in words is "one billion, three hundred eleven million, three hundred three thousand, four hundred thirty-four".