11403131311 has 8 divisors (see below), whose sum is σ = 13396685904. Its totient is φ = 9569061120.

The previous prime is 11403131297. The next prime is 11403131317. The reversal of 11403131311 is 11313130411.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11403131311 - 2¹¹ = 11403129263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11403131317) 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 7 ways as a sum of consecutive naturals, for example, 39870946 + ... + 39871231.

It is an arithmetic number, because the mean of its divisors is an integer number (1674585738).

Almost surely, 2^11403131311 is an apocalyptic number.

11403131311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11403131311 is a deficient number, since it is larger than the sum of its proper divisors (1993554593).

11403131311 is a wasteful number, since it uses less digits than its factorization.

11403131311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79742201.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 11403131311 its reverse (11313130411), we get a palindrome (22716261722).

The spelling of 11403131311 in words is "eleven billion, four hundred three million, one hundred thirty-one thousand, three hundred eleven".