1311433156541 has 16 divisors (see below), whose sum is σ = 1337925600000. Its totient is φ = 1285276700736.

The previous prime is 1311433156531. The next prime is 1311433156567. The reversal of 1311433156541 is 1456513341131.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311433156541 is a prime.

It is a super-2 number, since 2×1311433156541² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1311433156495 and 1311433156504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311433156531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3712670 + ... + 4050528.

It is an arithmetic number, because the mean of its divisors is an integer number (83620350000).

Almost surely, 2^{1311433156541} is an apocalyptic number.

It is an amenable number.

1311433156541 is a deficient number, since it is larger than the sum of its proper divisors (26492443459).

1311433156541 is a wasteful number, since it uses less digits than its factorization.

1311433156541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338356.

The product of its digits is 64800, while the sum is 38.

Adding to 1311433156541 its reverse (1456513341131), we get a palindrome (2767946497672).

The spelling of 1311433156541 in words is "one trillion, three hundred eleven billion, four hundred thirty-three million, one hundred fifty-six thousand, five hundred forty-one".