1311132434 has 32 divisors (see below), whose sum is σ = 2095186176. Its totient is φ = 614053440.

The previous prime is 1311132421. The next prime is 1311132437. The reversal of 1311132434 is 4342311131.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (1311132437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 511484 + ... + 514040.

It is an arithmetic number, because the mean of its divisors is an integer number (65474568).

Almost surely, 2^1311132434 is an apocalyptic number.

1311132434 is a deficient number, since it is larger than the sum of its proper divisors (784053742).

1311132434 is a wasteful number, since it uses less digits than its factorization.

1311132434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2810.

The product of its digits is 864, while the sum is 23.

The square root of 1311132434 is about 36209.5627424580. The cubic root of 1311132434 is about 1094.4993809806.

Adding to 1311132434 its reverse (4342311131), we get a palindrome (5653443565).

The spelling of 1311132434 in words is "one billion, three hundred eleven million, one hundred thirty-two thousand, four hundred thirty-four".