1311432001 has 6 divisors (see below), whose sum is σ = 1441491506. Its totient is φ = 1192210800.

The previous prime is 1311431987. The next prime is 1311432007. The reversal of 1311432001 is 1002341131.

It can be written as a sum of positive squares in only one way, i.e., 1285939600 + 25492401 = 35860^2 + 5049^2 .

It is not a de Polignac number, because 1311432001 - 2⁷ = 1311431873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311432007) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5419020 + ... + 5419261.

Almost surely, 2^1311432001 is an apocalyptic number.

1311432001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1311432001 is a deficient number, since it is larger than the sum of its proper divisors (130059505).

1311432001 is a wasteful number, since it uses less digits than its factorization.

1311432001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10838303 (or 10838292 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1311432001 is about 36213.6990792159. The cubic root of 1311432001 is about 1094.5827315559.

Adding to 1311432001 its reverse (1002341131), we get a palindrome (2313773132).

The spelling of 1311432001 in words is "one billion, three hundred eleven million, four hundred thirty-two thousand, one".