13816261831 has 4 divisors (see below), whose sum is σ = 13854747600. Its totient is φ = 13777776064.

The previous prime is 13816261819. The next prime is 13816261841.

It is a happy number.

13816261831 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13816261831 - 2¹¹ = 13816259783 is a prime.

It is a super-2 number, since 2×13816261831² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13816261841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19242346 + ... + 19243063.

It is an arithmetic number, because the mean of its divisors is an integer number (3463686900).

Almost surely, 2^13816261831 is an apocalyptic number.

13816261831 is a deficient number, since it is larger than the sum of its proper divisors (38485769).

13816261831 is an equidigital number, since it uses as much as digits as its factorization.

13816261831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38485768.

The product of its digits is 41472, while the sum is 40.

The spelling of 13816261831 in words is "thirteen billion, eight hundred sixteen million, two hundred sixty-one thousand, eight hundred thirty-one".