1311340401 has 24 divisors (see below), whose sum is σ = 2259908640. Its totient is φ = 749336616.

The previous prime is 1311340367. The next prime is 1311340403. The reversal of 1311340401 is 1040431131.

1311340401 is a `hidden beast` number, since 131 + 134 + 0 + 401 = 666.

It is not a de Polignac number, because 1311340401 - 2⁹ = 1311339889 is a prime.

It is a super-2 number, since 2×1311340401² = 3439227294589681602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1311340403) 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 23 ways as a sum of consecutive naturals, for example, 494271 + ... + 496916.

It is an arithmetic number, because the mean of its divisors is an integer number (94162860).

Almost surely, 2^1311340401 is an apocalyptic number.

It is an amenable number.

1311340401 is a deficient number, since it is larger than the sum of its proper divisors (948568239).

1311340401 is an equidigital number, since it uses as much as digits as its factorization.

1311340401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991210 (or 991197 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1311340401 is about 36212.4343423637. The cubic root of 1311340401 is about 1094.5572464088.

Adding to 1311340401 its reverse (1040431131), we get a palindrome (2351771532).

The spelling of 1311340401 in words is "one billion, three hundred eleven million, three hundred forty thousand, four hundred one".